./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:24:25,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:26,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:26,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:26,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:26,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:26,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:26,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:26,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:26,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:26,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:26,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:26,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:26,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:26,138 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:26,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:26,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:26,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:26,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:26,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:26,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:26,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:26,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:26,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:26,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:26,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:26,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:26,141 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:26,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:26,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:26,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:26,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:26,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:26,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:26,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:26,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:26,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:26,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:26,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:26,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:26,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:26,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:26,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:26,373 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:26,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:27,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:27,712 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:27,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:27,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7083025e5/cbd625aee7ea4f0fae703b12f35a167d/FLAG3b6fae556 [2024-02-07 14:24:27,732 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7083025e5/cbd625aee7ea4f0fae703b12f35a167d [2024-02-07 14:24:27,734 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:27,734 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:27,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 14:24:27,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:27,829 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:27,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:27,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:27,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:27,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:27" (1/2) ... [2024-02-07 14:24:27,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc1a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:27" (1/2) ... [2024-02-07 14:24:27,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@478c7fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/2) ... [2024-02-07 14:24:27,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc1a18d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/2) ... [2024-02-07 14:24:27,839 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:27,904 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:27,906 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,906 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:27,906 INFO L76 edCorrectnessWitness]: Location invariant before [L749-L749] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,906 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:27,906 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] y == 2 [2024-02-07 14:24:27,907 INFO L76 edCorrectnessWitness]: Location invariant before [L759-L759] y == 1 [2024-02-07 14:24:27,907 INFO L76 edCorrectnessWitness]: Location invariant before [L791-L791] (((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && (x == 2)) && ((y == 2 && (__unbuffered_p0_EAX == 0 || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) || (((((((0 <= __unbuffered_p0_EAX && 0 <= y) && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && y <= 2) && y <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:24:27,907 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,907 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] x == 2 [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L786-L786] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] (((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L792-L792] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L728-L728] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] x == 1 [2024-02-07 14:24:27,908 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:27,909 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,909 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,909 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 2)) && (__unbuffered_p0_EAX <= 127)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2) [2024-02-07 14:24:27,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:28,094 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 14:24:28,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:28,254 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:28,283 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:24:28,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:28,364 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:28,365 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28 WrapperNode [2024-02-07 14:24:28,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:28,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:28,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:28,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:28,373 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 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,382 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 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,397 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2024-02-07 14:24:28,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:28,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:28,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:28,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:28,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,421 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 14:24:28,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:28,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:28,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:28,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:28,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (1/1) ... [2024-02-07 14:24:28,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:28,456 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) [2024-02-07 14:24:28,502 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 [2024-02-07 14:24:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:28,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:28,517 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:24:28,617 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:28,618 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:28,833 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:28,834 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:28,946 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:28,947 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:28,948 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:28 BoogieIcfgContainer [2024-02-07 14:24:28,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:28,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:28,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:28,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:28,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:27" (1/4) ... [2024-02-07 14:24:28,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a46cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/4) ... [2024-02-07 14:24:28,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a46cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28" (3/4) ... [2024-02-07 14:24:28,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a46cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:28" (4/4) ... [2024-02-07 14:24:28,957 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:28,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:28,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-07 14:24:28,971 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:29,020 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:29,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:29,094 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2024-02-07 14:24:29,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:29,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-07 14:24:29,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:29,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2024-02-07 14:24:29,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:29,121 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;@2a960ba2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:29,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-07 14:24:29,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:29,125 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:29,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:29,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:29,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:29,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 9488200, now seen corresponding path program 1 times [2024-02-07 14:24:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465460500] [2024-02-07 14:24:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465460500] [2024-02-07 14:24:29,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465460500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429712093] [2024-02-07 14:24:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:24:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:24:29,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:24:29,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:29,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:29,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:29,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:30,517 INFO L124 PetriNetUnfolderBase]: 6602/11438 cut-off events. [2024-02-07 14:24:30,517 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 14:24:30,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20890 conditions, 11438 events. 6602/11438 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 91240 event pairs, 6602 based on Foata normal form. 294/8394 useless extension candidates. Maximal degree in co-relation 20879. Up to 9348 conditions per place. [2024-02-07 14:24:30,643 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-02-07 14:24:30,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 163 flow [2024-02-07 14:24:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:24:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:24:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2024-02-07 14:24:30,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2024-02-07 14:24:30,654 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 2 states and 79 transitions. [2024-02-07 14:24:30,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 163 flow [2024-02-07 14:24:30,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:30,663 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 98 flow [2024-02-07 14:24:30,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-02-07 14:24:30,669 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-07 14:24:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 98 flow [2024-02-07 14:24:30,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:30,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:24:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:30,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash 528236522, now seen corresponding path program 1 times [2024-02-07 14:24:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412711570] [2024-02-07 14:24:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:30,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412711570] [2024-02-07 14:24:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412711570] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:30,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254735600] [2024-02-07 14:24:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:30,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:30,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:30,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:30,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:30,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:31,334 INFO L124 PetriNetUnfolderBase]: 5988/10270 cut-off events. [2024-02-07 14:24:31,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:31,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18873 conditions, 10270 events. 5988/10270 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 79017 event pairs, 1493 based on Foata normal form. 0/7426 useless extension candidates. Maximal degree in co-relation 18870. Up to 7919 conditions per place. [2024-02-07 14:24:31,505 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-02-07 14:24:31,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 230 flow [2024-02-07 14:24:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 14:24:31,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-02-07 14:24:31,518 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 98 flow. Second operand 3 states and 105 transitions. [2024-02-07 14:24:31,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 230 flow [2024-02-07 14:24:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:31,520 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 110 flow [2024-02-07 14:24:31,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 14:24:31,521 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:31,521 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 110 flow [2024-02-07 14:24:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:31,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:31,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:31,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:31,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:31,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash -488251105, now seen corresponding path program 1 times [2024-02-07 14:24:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896624362] [2024-02-07 14:24:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896624362] [2024-02-07 14:24:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896624362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:31,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:31,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407602610] [2024-02-07 14:24:31,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:31,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:31,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:31,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:31,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:31,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:31,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:31,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:31,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:32,133 INFO L124 PetriNetUnfolderBase]: 4594/6939 cut-off events. [2024-02-07 14:24:32,134 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-02-07 14:24:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14693 conditions, 6939 events. 4594/6939 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 42482 event pairs, 1506 based on Foata normal form. 0/6039 useless extension candidates. Maximal degree in co-relation 14688. Up to 5682 conditions per place. [2024-02-07 14:24:32,163 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 49 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-02-07 14:24:32,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 273 flow [2024-02-07 14:24:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-02-07 14:24:32,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-02-07 14:24:32,165 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 110 flow. Second operand 3 states and 111 transitions. [2024-02-07 14:24:32,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 273 flow [2024-02-07 14:24:32,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:32,167 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 138 flow [2024-02-07 14:24:32,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-02-07 14:24:32,167 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:32,168 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 138 flow [2024-02-07 14:24:32,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:32,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:32,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:32,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:32,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2044085291, now seen corresponding path program 1 times [2024-02-07 14:24:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672012748] [2024-02-07 14:24:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672012748] [2024-02-07 14:24:32,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672012748] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:32,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:32,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:32,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597062193] [2024-02-07 14:24:32,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:32,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:32,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:32,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:32,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:32,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:32,644 INFO L124 PetriNetUnfolderBase]: 4594/7870 cut-off events. [2024-02-07 14:24:32,644 INFO L125 PetriNetUnfolderBase]: For 1527/1527 co-relation queries the response was YES. [2024-02-07 14:24:32,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17460 conditions, 7870 events. 4594/7870 cut-off events. For 1527/1527 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 58410 event pairs, 4308 based on Foata normal form. 0/6682 useless extension candidates. Maximal degree in co-relation 17454. Up to 6622 conditions per place. [2024-02-07 14:24:32,698 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 33 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-02-07 14:24:32,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 204 flow [2024-02-07 14:24:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-02-07 14:24:32,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2024-02-07 14:24:32,700 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 138 flow. Second operand 3 states and 83 transitions. [2024-02-07 14:24:32,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 204 flow [2024-02-07 14:24:32,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:32,702 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 134 flow [2024-02-07 14:24:32,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-07 14:24:32,703 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:32,703 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 134 flow [2024-02-07 14:24:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:32,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:32,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:32,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:32,705 INFO L85 PathProgramCache]: Analyzing trace with hash 856752989, now seen corresponding path program 1 times [2024-02-07 14:24:32,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017719500] [2024-02-07 14:24:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:32,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017719500] [2024-02-07 14:24:32,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017719500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:32,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088033989] [2024-02-07 14:24:32,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:32,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:32,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:32,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:32,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:32,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:32,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:33,193 INFO L124 PetriNetUnfolderBase]: 4118/6957 cut-off events. [2024-02-07 14:24:33,193 INFO L125 PetriNetUnfolderBase]: For 1365/1365 co-relation queries the response was YES. [2024-02-07 14:24:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 6957 events. 4118/6957 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 49836 event pairs, 3438 based on Foata normal form. 85/5989 useless extension candidates. Maximal degree in co-relation 15377. Up to 5379 conditions per place. [2024-02-07 14:24:33,219 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 51 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-07 14:24:33,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 294 flow [2024-02-07 14:24:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 14:24:33,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-02-07 14:24:33,221 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 134 flow. Second operand 3 states and 105 transitions. [2024-02-07 14:24:33,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 294 flow [2024-02-07 14:24:33,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:33,222 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 145 flow [2024-02-07 14:24:33,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-02-07 14:24:33,223 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-02-07 14:24:33,223 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 145 flow [2024-02-07 14:24:33,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:33,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:33,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:33,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash -83642123, now seen corresponding path program 1 times [2024-02-07 14:24:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:33,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997334868] [2024-02-07 14:24:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997334868] [2024-02-07 14:24:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997334868] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583399893] [2024-02-07 14:24:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:33,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:33,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:33,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:33,541 INFO L124 PetriNetUnfolderBase]: 3252/5605 cut-off events. [2024-02-07 14:24:33,541 INFO L125 PetriNetUnfolderBase]: For 2486/2508 co-relation queries the response was YES. [2024-02-07 14:24:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12751 conditions, 5605 events. 3252/5605 cut-off events. For 2486/2508 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38481 event pairs, 1334 based on Foata normal form. 361/5173 useless extension candidates. Maximal degree in co-relation 12744. Up to 3712 conditions per place. [2024-02-07 14:24:33,569 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 50 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-02-07 14:24:33,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 289 flow [2024-02-07 14:24:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-02-07 14:24:33,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573770491803278 [2024-02-07 14:24:33,571 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 145 flow. Second operand 3 states and 102 transitions. [2024-02-07 14:24:33,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 289 flow [2024-02-07 14:24:33,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:33,574 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 131 flow [2024-02-07 14:24:33,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-02-07 14:24:33,574 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:33,575 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 131 flow [2024-02-07 14:24:33,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:33,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:33,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:33,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1565921107, now seen corresponding path program 1 times [2024-02-07 14:24:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891942065] [2024-02-07 14:24:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891942065] [2024-02-07 14:24:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891942065] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198671957] [2024-02-07 14:24:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:33,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:33,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:33,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:33,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,002 INFO L124 PetriNetUnfolderBase]: 3205/5630 cut-off events. [2024-02-07 14:24:34,003 INFO L125 PetriNetUnfolderBase]: For 1253/1253 co-relation queries the response was YES. [2024-02-07 14:24:34,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 5630 events. 3205/5630 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39526 event pairs, 597 based on Foata normal form. 179/4989 useless extension candidates. Maximal degree in co-relation 12627. Up to 2593 conditions per place. [2024-02-07 14:24:34,030 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 54 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-02-07 14:24:34,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 329 flow [2024-02-07 14:24:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-02-07 14:24:34,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286885245901639 [2024-02-07 14:24:34,032 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 131 flow. Second operand 4 states and 129 transitions. [2024-02-07 14:24:34,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 329 flow [2024-02-07 14:24:34,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:34,034 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 156 flow [2024-02-07 14:24:34,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-02-07 14:24:34,035 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places. [2024-02-07 14:24:34,035 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 156 flow [2024-02-07 14:24:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:34,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:34,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1227391660, now seen corresponding path program 1 times [2024-02-07 14:24:34,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818334486] [2024-02-07 14:24:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:34,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818334486] [2024-02-07 14:24:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818334486] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:34,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:34,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667442057] [2024-02-07 14:24:34,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:34,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:34,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:34,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:34,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:34,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:34,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,250 INFO L124 PetriNetUnfolderBase]: 1852/3269 cut-off events. [2024-02-07 14:24:34,251 INFO L125 PetriNetUnfolderBase]: For 1448/1448 co-relation queries the response was YES. [2024-02-07 14:24:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 3269 events. 1852/3269 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 20521 event pairs, 792 based on Foata normal form. 98/3223 useless extension candidates. Maximal degree in co-relation 7765. Up to 2510 conditions per place. [2024-02-07 14:24:34,263 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 35 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2024-02-07 14:24:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 250 flow [2024-02-07 14:24:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-02-07 14:24:34,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2024-02-07 14:24:34,265 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 156 flow. Second operand 3 states and 98 transitions. [2024-02-07 14:24:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 250 flow [2024-02-07 14:24:34,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:34,266 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 134 flow [2024-02-07 14:24:34,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-02-07 14:24:34,267 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:34,267 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 134 flow [2024-02-07 14:24:34,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:34,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:34,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2126256474, now seen corresponding path program 1 times [2024-02-07 14:24:34,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48427877] [2024-02-07 14:24:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:34,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:34,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48427877] [2024-02-07 14:24:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48427877] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:34,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901182667] [2024-02-07 14:24:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:34,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:34,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:34,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:34,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,548 INFO L124 PetriNetUnfolderBase]: 1502/2757 cut-off events. [2024-02-07 14:24:34,548 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2024-02-07 14:24:34,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 2757 events. 1502/2757 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17370 event pairs, 871 based on Foata normal form. 2/2634 useless extension candidates. Maximal degree in co-relation 6408. Up to 2191 conditions per place. [2024-02-07 14:24:34,562 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 41 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-02-07 14:24:34,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 295 flow [2024-02-07 14:24:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-02-07 14:24:34,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2024-02-07 14:24:34,563 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 134 flow. Second operand 4 states and 117 transitions. [2024-02-07 14:24:34,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 295 flow [2024-02-07 14:24:34,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 272 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:34,568 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 158 flow [2024-02-07 14:24:34,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-02-07 14:24:34,569 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:34,569 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 158 flow [2024-02-07 14:24:34,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:34,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:34,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash 240219374, now seen corresponding path program 1 times [2024-02-07 14:24:34,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632159149] [2024-02-07 14:24:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632159149] [2024-02-07 14:24:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632159149] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832399647] [2024-02-07 14:24:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:34,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:34,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:34,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:34,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:34,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,873 INFO L124 PetriNetUnfolderBase]: 1127/2045 cut-off events. [2024-02-07 14:24:34,873 INFO L125 PetriNetUnfolderBase]: For 801/803 co-relation queries the response was YES. [2024-02-07 14:24:34,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 2045 events. 1127/2045 cut-off events. For 801/803 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11575 event pairs, 129 based on Foata normal form. 98/2067 useless extension candidates. Maximal degree in co-relation 4958. Up to 593 conditions per place. [2024-02-07 14:24:34,883 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 64 selfloop transitions, 8 changer transitions 1/87 dead transitions. [2024-02-07 14:24:34,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 441 flow [2024-02-07 14:24:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-02-07 14:24:34,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016393442622951 [2024-02-07 14:24:34,885 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 158 flow. Second operand 5 states and 153 transitions. [2024-02-07 14:24:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 441 flow [2024-02-07 14:24:34,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 434 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:34,887 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 201 flow [2024-02-07 14:24:34,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-02-07 14:24:34,889 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-02-07 14:24:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 201 flow [2024-02-07 14:24:34,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:34,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:34,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash -333742899, now seen corresponding path program 1 times [2024-02-07 14:24:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611699739] [2024-02-07 14:24:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611699739] [2024-02-07 14:24:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611699739] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:35,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:35,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804274875] [2024-02-07 14:24:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:35,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:35,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:35,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:35,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:35,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:35,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:35,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:35,292 INFO L124 PetriNetUnfolderBase]: 1169/2226 cut-off events. [2024-02-07 14:24:35,292 INFO L125 PetriNetUnfolderBase]: For 1826/1828 co-relation queries the response was YES. [2024-02-07 14:24:35,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5731 conditions, 2226 events. 1169/2226 cut-off events. For 1826/1828 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13331 event pairs, 369 based on Foata normal form. 10/2146 useless extension candidates. Maximal degree in co-relation 5720. Up to 1124 conditions per place. [2024-02-07 14:24:35,302 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 79 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-02-07 14:24:35,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 638 flow [2024-02-07 14:24:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-02-07 14:24:35,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:24:35,304 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 201 flow. Second operand 6 states and 183 transitions. [2024-02-07 14:24:35,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 638 flow [2024-02-07 14:24:35,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 105 transitions, 569 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:35,308 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 262 flow [2024-02-07 14:24:35,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-02-07 14:24:35,309 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-02-07 14:24:35,309 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 262 flow [2024-02-07 14:24:35,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:35,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:35,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:24:35,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:35,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1983027607, now seen corresponding path program 2 times [2024-02-07 14:24:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749448364] [2024-02-07 14:24:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749448364] [2024-02-07 14:24:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749448364] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:35,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:35,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070656025] [2024-02-07 14:24:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:35,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:35,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:35,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:35,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:35,765 INFO L124 PetriNetUnfolderBase]: 1569/2957 cut-off events. [2024-02-07 14:24:35,765 INFO L125 PetriNetUnfolderBase]: For 2830/2830 co-relation queries the response was YES. [2024-02-07 14:24:35,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8327 conditions, 2957 events. 1569/2957 cut-off events. For 2830/2830 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 18781 event pairs, 534 based on Foata normal form. 8/2844 useless extension candidates. Maximal degree in co-relation 8313. Up to 1246 conditions per place. [2024-02-07 14:24:35,783 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 101 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-02-07 14:24:35,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 926 flow [2024-02-07 14:24:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-02-07 14:24:35,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790528233151184 [2024-02-07 14:24:35,785 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 262 flow. Second operand 9 states and 263 transitions. [2024-02-07 14:24:35,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 926 flow [2024-02-07 14:24:35,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 145 transitions, 892 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:35,790 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 469 flow [2024-02-07 14:24:35,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=469, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-02-07 14:24:35,790 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2024-02-07 14:24:35,790 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 469 flow [2024-02-07 14:24:35,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:35,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:35,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:24:35,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:35,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -40255199, now seen corresponding path program 3 times [2024-02-07 14:24:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348600847] [2024-02-07 14:24:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:35,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:35,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348600847] [2024-02-07 14:24:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348600847] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:35,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438737115] [2024-02-07 14:24:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:35,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:35,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:35,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:35,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:35,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:36,328 INFO L124 PetriNetUnfolderBase]: 1577/3008 cut-off events. [2024-02-07 14:24:36,329 INFO L125 PetriNetUnfolderBase]: For 5116/5116 co-relation queries the response was YES. [2024-02-07 14:24:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 3008 events. 1577/3008 cut-off events. For 5116/5116 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19235 event pairs, 481 based on Foata normal form. 8/2886 useless extension candidates. Maximal degree in co-relation 9271. Up to 1250 conditions per place. [2024-02-07 14:24:36,356 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 94 selfloop transitions, 28 changer transitions 0/136 dead transitions. [2024-02-07 14:24:36,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 136 transitions, 988 flow [2024-02-07 14:24:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-02-07 14:24:36,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2024-02-07 14:24:36,358 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 469 flow. Second operand 8 states and 234 transitions. [2024-02-07 14:24:36,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 136 transitions, 988 flow [2024-02-07 14:24:36,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 966 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:36,370 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 529 flow [2024-02-07 14:24:36,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-02-07 14:24:36,371 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2024-02-07 14:24:36,371 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 529 flow [2024-02-07 14:24:36,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:36,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:36,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:36,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:24:36,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:36,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash 421957001, now seen corresponding path program 4 times [2024-02-07 14:24:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306231586] [2024-02-07 14:24:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306231586] [2024-02-07 14:24:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306231586] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:36,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:36,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684548333] [2024-02-07 14:24:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:36,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:36,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:36,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:36,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:36,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:36,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:37,079 INFO L124 PetriNetUnfolderBase]: 2476/4832 cut-off events. [2024-02-07 14:24:37,080 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2024-02-07 14:24:37,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14608 conditions, 4832 events. 2476/4832 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 35095 event pairs, 654 based on Foata normal form. 28/4631 useless extension candidates. Maximal degree in co-relation 14587. Up to 1946 conditions per place. [2024-02-07 14:24:37,128 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 125 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2024-02-07 14:24:37,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 1278 flow [2024-02-07 14:24:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-07 14:24:37,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2024-02-07 14:24:37,130 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 529 flow. Second operand 6 states and 193 transitions. [2024-02-07 14:24:37,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 1278 flow [2024-02-07 14:24:37,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1232 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:37,148 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 674 flow [2024-02-07 14:24:37,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-02-07 14:24:37,149 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-02-07 14:24:37,149 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 674 flow [2024-02-07 14:24:37,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:37,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:37,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:37,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:24:37,150 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:37,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1545519337, now seen corresponding path program 5 times [2024-02-07 14:24:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:37,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915727062] [2024-02-07 14:24:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915727062] [2024-02-07 14:24:37,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915727062] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:37,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856212388] [2024-02-07 14:24:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:37,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:37,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:37,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:37,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:37,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:37,838 INFO L124 PetriNetUnfolderBase]: 2934/5846 cut-off events. [2024-02-07 14:24:37,839 INFO L125 PetriNetUnfolderBase]: For 12598/12600 co-relation queries the response was YES. [2024-02-07 14:24:37,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18052 conditions, 5846 events. 2934/5846 cut-off events. For 12598/12600 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 44616 event pairs, 701 based on Foata normal form. 30/5577 useless extension candidates. Maximal degree in co-relation 18028. Up to 1986 conditions per place. [2024-02-07 14:24:37,882 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 142 selfloop transitions, 33 changer transitions 0/189 dead transitions. [2024-02-07 14:24:37,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 189 transitions, 1609 flow [2024-02-07 14:24:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-07 14:24:37,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522248243559719 [2024-02-07 14:24:37,885 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 674 flow. Second operand 7 states and 223 transitions. [2024-02-07 14:24:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 189 transitions, 1609 flow [2024-02-07 14:24:37,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 189 transitions, 1583 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:37,904 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 920 flow [2024-02-07 14:24:37,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-02-07 14:24:37,906 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-02-07 14:24:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 920 flow [2024-02-07 14:24:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:37,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:37,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:37,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:24:37,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:37,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1213666128, now seen corresponding path program 1 times [2024-02-07 14:24:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714728484] [2024-02-07 14:24:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:38,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:38,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714728484] [2024-02-07 14:24:38,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714728484] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:38,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705914409] [2024-02-07 14:24:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:38,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:38,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:38,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:38,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 920 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:38,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:38,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:38,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:38,653 INFO L124 PetriNetUnfolderBase]: 3119/6205 cut-off events. [2024-02-07 14:24:38,654 INFO L125 PetriNetUnfolderBase]: For 16836/16838 co-relation queries the response was YES. [2024-02-07 14:24:38,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20306 conditions, 6205 events. 3119/6205 cut-off events. For 16836/16838 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 47442 event pairs, 1018 based on Foata normal form. 4/5887 useless extension candidates. Maximal degree in co-relation 20278. Up to 4181 conditions per place. [2024-02-07 14:24:38,717 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 124 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2024-02-07 14:24:38,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 159 transitions, 1522 flow [2024-02-07 14:24:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-02-07 14:24:38,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2024-02-07 14:24:38,718 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 920 flow. Second operand 6 states and 181 transitions. [2024-02-07 14:24:38,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 159 transitions, 1522 flow [2024-02-07 14:24:38,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 159 transitions, 1492 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:38,777 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1074 flow [2024-02-07 14:24:38,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1074, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-02-07 14:24:38,777 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 42 predicate places. [2024-02-07 14:24:38,778 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1074 flow [2024-02-07 14:24:38,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:38,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:38,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:38,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:24:38,778 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:38,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash 14212448, now seen corresponding path program 2 times [2024-02-07 14:24:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:38,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999245989] [2024-02-07 14:24:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999245989] [2024-02-07 14:24:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999245989] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:38,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166121629] [2024-02-07 14:24:38,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:38,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:38,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:38,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1074 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:38,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:38,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:38,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:39,496 INFO L124 PetriNetUnfolderBase]: 3103/6193 cut-off events. [2024-02-07 14:24:39,496 INFO L125 PetriNetUnfolderBase]: For 18616/18618 co-relation queries the response was YES. [2024-02-07 14:24:39,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20733 conditions, 6193 events. 3103/6193 cut-off events. For 18616/18618 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 47532 event pairs, 1042 based on Foata normal form. 8/5879 useless extension candidates. Maximal degree in co-relation 20701. Up to 4173 conditions per place. [2024-02-07 14:24:39,539 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 117 selfloop transitions, 25 changer transitions 0/156 dead transitions. [2024-02-07 14:24:39,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 1566 flow [2024-02-07 14:24:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-02-07 14:24:39,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 14:24:39,541 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1074 flow. Second operand 6 states and 178 transitions. [2024-02-07 14:24:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 1566 flow [2024-02-07 14:24:39,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 156 transitions, 1497 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:39,573 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1121 flow [2024-02-07 14:24:39,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1121, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-02-07 14:24:39,574 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 47 predicate places. [2024-02-07 14:24:39,574 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1121 flow [2024-02-07 14:24:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:39,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:39,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:39,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:24:39,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:39,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 717608550, now seen corresponding path program 1 times [2024-02-07 14:24:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167931132] [2024-02-07 14:24:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:39,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:39,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167931132] [2024-02-07 14:24:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167931132] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:39,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481838538] [2024-02-07 14:24:39,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:39,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:39,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1121 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:39,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:39,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:39,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:40,018 INFO L124 PetriNetUnfolderBase]: 2179/3767 cut-off events. [2024-02-07 14:24:40,018 INFO L125 PetriNetUnfolderBase]: For 13888/13890 co-relation queries the response was YES. [2024-02-07 14:24:40,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14115 conditions, 3767 events. 2179/3767 cut-off events. For 13888/13890 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22228 event pairs, 167 based on Foata normal form. 176/3875 useless extension candidates. Maximal degree in co-relation 14081. Up to 1392 conditions per place. [2024-02-07 14:24:40,047 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 171 selfloop transitions, 11 changer transitions 1/197 dead transitions. [2024-02-07 14:24:40,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 2240 flow [2024-02-07 14:24:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-02-07 14:24:40,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2024-02-07 14:24:40,048 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 1121 flow. Second operand 6 states and 165 transitions. [2024-02-07 14:24:40,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 2240 flow [2024-02-07 14:24:40,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 1898 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-02-07 14:24:40,067 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 815 flow [2024-02-07 14:24:40,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-02-07 14:24:40,068 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 43 predicate places. [2024-02-07 14:24:40,068 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 815 flow [2024-02-07 14:24:40,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:40,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:40,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:40,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:24:40,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:40,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 512508835, now seen corresponding path program 1 times [2024-02-07 14:24:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:40,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790848955] [2024-02-07 14:24:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:40,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:40,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790848955] [2024-02-07 14:24:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790848955] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:40,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512090649] [2024-02-07 14:24:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:40,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:40,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:40,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:40,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:40,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:40,598 INFO L124 PetriNetUnfolderBase]: 2257/4230 cut-off events. [2024-02-07 14:24:40,598 INFO L125 PetriNetUnfolderBase]: For 11247/11247 co-relation queries the response was YES. [2024-02-07 14:24:40,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14488 conditions, 4230 events. 2257/4230 cut-off events. For 11247/11247 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 28282 event pairs, 648 based on Foata normal form. 8/4140 useless extension candidates. Maximal degree in co-relation 14460. Up to 1678 conditions per place. [2024-02-07 14:24:40,623 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 136 selfloop transitions, 37 changer transitions 0/187 dead transitions. [2024-02-07 14:24:40,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 187 transitions, 1730 flow [2024-02-07 14:24:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 241 transitions. [2024-02-07 14:24:40,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385245901639346 [2024-02-07 14:24:40,625 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 815 flow. Second operand 8 states and 241 transitions. [2024-02-07 14:24:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 187 transitions, 1730 flow [2024-02-07 14:24:40,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 187 transitions, 1510 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-02-07 14:24:40,655 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 870 flow [2024-02-07 14:24:40,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=870, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-02-07 14:24:40,655 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-02-07 14:24:40,655 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 870 flow [2024-02-07 14:24:40,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:40,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:40,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:40,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 14:24:40,656 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:40,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:40,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1635508853, now seen corresponding path program 2 times [2024-02-07 14:24:40,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:40,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719929196] [2024-02-07 14:24:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:40,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:40,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:40,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719929196] [2024-02-07 14:24:40,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719929196] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:40,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:40,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:40,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383948938] [2024-02-07 14:24:40,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:40,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:40,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:40,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:40,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:40,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:40,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:40,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:41,189 INFO L124 PetriNetUnfolderBase]: 2593/4945 cut-off events. [2024-02-07 14:24:41,190 INFO L125 PetriNetUnfolderBase]: For 11207/11209 co-relation queries the response was YES. [2024-02-07 14:24:41,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14949 conditions, 4945 events. 2593/4945 cut-off events. For 11207/11209 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 34656 event pairs, 695 based on Foata normal form. 10/4822 useless extension candidates. Maximal degree in co-relation 14923. Up to 2602 conditions per place. [2024-02-07 14:24:41,213 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 123 selfloop transitions, 26 changer transitions 0/163 dead transitions. [2024-02-07 14:24:41,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 163 transitions, 1423 flow [2024-02-07 14:24:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-02-07 14:24:41,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 14:24:41,215 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 870 flow. Second operand 6 states and 178 transitions. [2024-02-07 14:24:41,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 163 transitions, 1423 flow [2024-02-07 14:24:41,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 163 transitions, 1344 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:41,236 INFO L231 Difference]: Finished difference. Result has 115 places, 107 transitions, 898 flow [2024-02-07 14:24:41,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=898, PETRI_PLACES=115, PETRI_TRANSITIONS=107} [2024-02-07 14:24:41,236 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2024-02-07 14:24:41,236 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 107 transitions, 898 flow [2024-02-07 14:24:41,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:41,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:41,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:41,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 14:24:41,237 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:41,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -758932395, now seen corresponding path program 3 times [2024-02-07 14:24:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765124121] [2024-02-07 14:24:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765124121] [2024-02-07 14:24:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765124121] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173692268] [2024-02-07 14:24:41,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:41,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:41,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:41,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 107 transitions, 898 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:41,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:41,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:41,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:41,829 INFO L124 PetriNetUnfolderBase]: 2926/5528 cut-off events. [2024-02-07 14:24:41,829 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-02-07 14:24:41,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16587 conditions, 5528 events. 2926/5528 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39412 event pairs, 1668 based on Foata normal form. 8/5375 useless extension candidates. Maximal degree in co-relation 16558. Up to 3716 conditions per place. [2024-02-07 14:24:41,861 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 143 selfloop transitions, 28 changer transitions 0/185 dead transitions. [2024-02-07 14:24:41,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 185 transitions, 1602 flow [2024-02-07 14:24:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-02-07 14:24:41,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44990892531876137 [2024-02-07 14:24:41,863 INFO L175 Difference]: Start difference. First operand has 115 places, 107 transitions, 898 flow. Second operand 9 states and 247 transitions. [2024-02-07 14:24:41,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 185 transitions, 1602 flow [2024-02-07 14:24:41,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 185 transitions, 1550 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:41,895 INFO L231 Difference]: Finished difference. Result has 126 places, 113 transitions, 996 flow [2024-02-07 14:24:41,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=996, PETRI_PLACES=126, PETRI_TRANSITIONS=113} [2024-02-07 14:24:41,896 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 59 predicate places. [2024-02-07 14:24:41,896 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 113 transitions, 996 flow [2024-02-07 14:24:41,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:41,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:41,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:41,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 14:24:41,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:41,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:41,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1577657203, now seen corresponding path program 4 times [2024-02-07 14:24:41,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:41,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213090296] [2024-02-07 14:24:41,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:41,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213090296] [2024-02-07 14:24:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213090296] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:42,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:42,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386650774] [2024-02-07 14:24:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:42,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:42,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 113 transitions, 996 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:42,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:42,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:42,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:42,515 INFO L124 PetriNetUnfolderBase]: 3528/6832 cut-off events. [2024-02-07 14:24:42,515 INFO L125 PetriNetUnfolderBase]: For 16216/16218 co-relation queries the response was YES. [2024-02-07 14:24:42,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19990 conditions, 6832 events. 3528/6832 cut-off events. For 16216/16218 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 51900 event pairs, 819 based on Foata normal form. 10/6645 useless extension candidates. Maximal degree in co-relation 19956. Up to 3206 conditions per place. [2024-02-07 14:24:42,560 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 136 selfloop transitions, 29 changer transitions 0/179 dead transitions. [2024-02-07 14:24:42,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 179 transitions, 1642 flow [2024-02-07 14:24:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-02-07 14:24:42,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:24:42,561 INFO L175 Difference]: Start difference. First operand has 126 places, 113 transitions, 996 flow. Second operand 6 states and 183 transitions. [2024-02-07 14:24:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 179 transitions, 1642 flow [2024-02-07 14:24:42,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 179 transitions, 1528 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:42,606 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 1003 flow [2024-02-07 14:24:42,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1003, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2024-02-07 14:24:42,606 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 63 predicate places. [2024-02-07 14:24:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 1003 flow [2024-02-07 14:24:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:42,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:42,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 14:24:42,607 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:42,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash 220246499, now seen corresponding path program 5 times [2024-02-07 14:24:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971397106] [2024-02-07 14:24:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:42,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971397106] [2024-02-07 14:24:42,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971397106] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:42,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:42,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379672231] [2024-02-07 14:24:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:42,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:42,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:42,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 1003 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:42,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:42,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:43,302 INFO L124 PetriNetUnfolderBase]: 3532/6826 cut-off events. [2024-02-07 14:24:43,303 INFO L125 PetriNetUnfolderBase]: For 18882/18882 co-relation queries the response was YES. [2024-02-07 14:24:43,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20040 conditions, 6826 events. 3532/6826 cut-off events. For 18882/18882 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51823 event pairs, 2190 based on Foata normal form. 8/6609 useless extension candidates. Maximal degree in co-relation 20004. Up to 4706 conditions per place. [2024-02-07 14:24:43,338 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 138 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2024-02-07 14:24:43,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 178 transitions, 1601 flow [2024-02-07 14:24:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-07 14:24:43,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2024-02-07 14:24:43,341 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 1003 flow. Second operand 7 states and 202 transitions. [2024-02-07 14:24:43,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 178 transitions, 1601 flow [2024-02-07 14:24:43,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 178 transitions, 1565 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:43,385 INFO L231 Difference]: Finished difference. Result has 136 places, 116 transitions, 1026 flow [2024-02-07 14:24:43,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1026, PETRI_PLACES=136, PETRI_TRANSITIONS=116} [2024-02-07 14:24:43,386 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 69 predicate places. [2024-02-07 14:24:43,386 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 116 transitions, 1026 flow [2024-02-07 14:24:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:43,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:43,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:43,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 14:24:43,387 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:43,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2041420517, now seen corresponding path program 6 times [2024-02-07 14:24:43,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:43,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496132249] [2024-02-07 14:24:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:43,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496132249] [2024-02-07 14:24:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496132249] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:43,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185604523] [2024-02-07 14:24:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:43,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:43,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:43,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:43,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 116 transitions, 1026 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:43,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:43,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:43,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:44,022 INFO L124 PetriNetUnfolderBase]: 3536/6946 cut-off events. [2024-02-07 14:24:44,022 INFO L125 PetriNetUnfolderBase]: For 16431/16433 co-relation queries the response was YES. [2024-02-07 14:24:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20173 conditions, 6946 events. 3536/6946 cut-off events. For 16431/16433 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53694 event pairs, 819 based on Foata normal form. 10/6727 useless extension candidates. Maximal degree in co-relation 20136. Up to 3218 conditions per place. [2024-02-07 14:24:44,069 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 140 selfloop transitions, 25 changer transitions 0/179 dead transitions. [2024-02-07 14:24:44,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 179 transitions, 1654 flow [2024-02-07 14:24:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-02-07 14:24:44,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972677595628415 [2024-02-07 14:24:44,070 INFO L175 Difference]: Start difference. First operand has 136 places, 116 transitions, 1026 flow. Second operand 6 states and 182 transitions. [2024-02-07 14:24:44,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 179 transitions, 1654 flow [2024-02-07 14:24:44,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 179 transitions, 1603 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 14:24:44,119 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 1044 flow [2024-02-07 14:24:44,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1044, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2024-02-07 14:24:44,120 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 71 predicate places. [2024-02-07 14:24:44,120 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 1044 flow [2024-02-07 14:24:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:44,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:44,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:44,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-07 14:24:44,121 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:44,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2088707167, now seen corresponding path program 7 times [2024-02-07 14:24:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187766036] [2024-02-07 14:24:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:44,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187766036] [2024-02-07 14:24:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187766036] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:44,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:44,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969347318] [2024-02-07 14:24:44,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:44,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:44,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:44,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:44,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 1044 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:44,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:44,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:44,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:44,824 INFO L124 PetriNetUnfolderBase]: 3777/7345 cut-off events. [2024-02-07 14:24:44,824 INFO L125 PetriNetUnfolderBase]: For 19486/19486 co-relation queries the response was YES. [2024-02-07 14:24:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21649 conditions, 7345 events. 3777/7345 cut-off events. For 19486/19486 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 56934 event pairs, 2417 based on Foata normal form. 8/7094 useless extension candidates. Maximal degree in co-relation 21610. Up to 5265 conditions per place. [2024-02-07 14:24:44,871 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 127 selfloop transitions, 32 changer transitions 0/173 dead transitions. [2024-02-07 14:24:44,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 173 transitions, 1653 flow [2024-02-07 14:24:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-07 14:24:44,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2024-02-07 14:24:44,874 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 1044 flow. Second operand 7 states and 196 transitions. [2024-02-07 14:24:44,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 173 transitions, 1653 flow [2024-02-07 14:24:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 173 transitions, 1606 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:44,929 INFO L231 Difference]: Finished difference. Result has 144 places, 122 transitions, 1137 flow [2024-02-07 14:24:44,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1137, PETRI_PLACES=144, PETRI_TRANSITIONS=122} [2024-02-07 14:24:44,929 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 77 predicate places. [2024-02-07 14:24:44,929 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 122 transitions, 1137 flow [2024-02-07 14:24:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:44,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:44,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-07 14:24:44,930 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:44,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1396528457, now seen corresponding path program 8 times [2024-02-07 14:24:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732115755] [2024-02-07 14:24:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732115755] [2024-02-07 14:24:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732115755] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:45,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49891962] [2024-02-07 14:24:45,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:45,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:45,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 122 transitions, 1137 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:45,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:45,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:45,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:45,974 INFO L124 PetriNetUnfolderBase]: 4661/9224 cut-off events. [2024-02-07 14:24:45,974 INFO L125 PetriNetUnfolderBase]: For 23670/23670 co-relation queries the response was YES. [2024-02-07 14:24:46,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26502 conditions, 9224 events. 4661/9224 cut-off events. For 23670/23670 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 75782 event pairs, 2403 based on Foata normal form. 8/8902 useless extension candidates. Maximal degree in co-relation 26461. Up to 4093 conditions per place. [2024-02-07 14:24:46,052 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 149 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2024-02-07 14:24:46,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 198 transitions, 1911 flow [2024-02-07 14:24:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-07 14:24:46,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2024-02-07 14:24:46,054 INFO L175 Difference]: Start difference. First operand has 144 places, 122 transitions, 1137 flow. Second operand 7 states and 210 transitions. [2024-02-07 14:24:46,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 198 transitions, 1911 flow [2024-02-07 14:24:46,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 198 transitions, 1851 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:46,126 INFO L231 Difference]: Finished difference. Result has 151 places, 125 transitions, 1221 flow [2024-02-07 14:24:46,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1221, PETRI_PLACES=151, PETRI_TRANSITIONS=125} [2024-02-07 14:24:46,126 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 84 predicate places. [2024-02-07 14:24:46,127 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 125 transitions, 1221 flow [2024-02-07 14:24:46,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:46,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:46,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:46,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-07 14:24:46,127 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:46,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:46,128 INFO L85 PathProgramCache]: Analyzing trace with hash 525316007, now seen corresponding path program 9 times [2024-02-07 14:24:46,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:46,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606274110] [2024-02-07 14:24:46,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:46,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606274110] [2024-02-07 14:24:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606274110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78235594] [2024-02-07 14:24:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:46,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:46,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:46,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 125 transitions, 1221 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:46,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:46,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:46,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:47,135 INFO L124 PetriNetUnfolderBase]: 4665/9282 cut-off events. [2024-02-07 14:24:47,136 INFO L125 PetriNetUnfolderBase]: For 26064/26064 co-relation queries the response was YES. [2024-02-07 14:24:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26844 conditions, 9282 events. 4665/9282 cut-off events. For 26064/26064 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 76836 event pairs, 2359 based on Foata normal form. 8/8944 useless extension candidates. Maximal degree in co-relation 26801. Up to 4093 conditions per place. [2024-02-07 14:24:47,204 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 150 selfloop transitions, 34 changer transitions 0/198 dead transitions. [2024-02-07 14:24:47,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 198 transitions, 1978 flow [2024-02-07 14:24:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:47,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-07 14:24:47,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894613583138173 [2024-02-07 14:24:47,206 INFO L175 Difference]: Start difference. First operand has 151 places, 125 transitions, 1221 flow. Second operand 7 states and 209 transitions. [2024-02-07 14:24:47,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 198 transitions, 1978 flow [2024-02-07 14:24:47,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 198 transitions, 1903 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:47,292 INFO L231 Difference]: Finished difference. Result has 157 places, 127 transitions, 1279 flow [2024-02-07 14:24:47,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1279, PETRI_PLACES=157, PETRI_TRANSITIONS=127} [2024-02-07 14:24:47,293 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 90 predicate places. [2024-02-07 14:24:47,293 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 127 transitions, 1279 flow [2024-02-07 14:24:47,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:47,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-07 14:24:47,294 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:47,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1014372725, now seen corresponding path program 10 times [2024-02-07 14:24:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:47,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626058356] [2024-02-07 14:24:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:47,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626058356] [2024-02-07 14:24:47,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626058356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:47,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:47,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737769706] [2024-02-07 14:24:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:47,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:47,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:47,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:47,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:47,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 127 transitions, 1279 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:47,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:47,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:48,337 INFO L124 PetriNetUnfolderBase]: 4935/9880 cut-off events. [2024-02-07 14:24:48,338 INFO L125 PetriNetUnfolderBase]: For 27440/27440 co-relation queries the response was YES. [2024-02-07 14:24:48,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28367 conditions, 9880 events. 4935/9880 cut-off events. For 27440/27440 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83130 event pairs, 2387 based on Foata normal form. 8/9510 useless extension candidates. Maximal degree in co-relation 28321. Up to 4093 conditions per place. [2024-02-07 14:24:48,392 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 167 selfloop transitions, 43 changer transitions 0/224 dead transitions. [2024-02-07 14:24:48,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 224 transitions, 2190 flow [2024-02-07 14:24:48,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2024-02-07 14:24:48,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 14:24:48,393 INFO L175 Difference]: Start difference. First operand has 157 places, 127 transitions, 1279 flow. Second operand 9 states and 267 transitions. [2024-02-07 14:24:48,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 224 transitions, 2190 flow [2024-02-07 14:24:48,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 224 transitions, 2129 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:48,493 INFO L231 Difference]: Finished difference. Result has 165 places, 129 transitions, 1357 flow [2024-02-07 14:24:48,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1357, PETRI_PLACES=165, PETRI_TRANSITIONS=129} [2024-02-07 14:24:48,494 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 98 predicate places. [2024-02-07 14:24:48,494 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 129 transitions, 1357 flow [2024-02-07 14:24:48,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:48,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:48,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-07 14:24:48,495 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:48,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash 708116423, now seen corresponding path program 11 times [2024-02-07 14:24:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502646905] [2024-02-07 14:24:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502646905] [2024-02-07 14:24:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502646905] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:48,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298846028] [2024-02-07 14:24:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:48,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:48,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 129 transitions, 1357 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:48,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:48,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:49,440 INFO L124 PetriNetUnfolderBase]: 4923/9817 cut-off events. [2024-02-07 14:24:49,441 INFO L125 PetriNetUnfolderBase]: For 30722/30722 co-relation queries the response was YES. [2024-02-07 14:24:49,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28671 conditions, 9817 events. 4923/9817 cut-off events. For 30722/30722 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 82235 event pairs, 3117 based on Foata normal form. 8/9440 useless extension candidates. Maximal degree in co-relation 28622. Up to 6389 conditions per place. [2024-02-07 14:24:49,526 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 149 selfloop transitions, 30 changer transitions 0/193 dead transitions. [2024-02-07 14:24:49,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 193 transitions, 2052 flow [2024-02-07 14:24:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-07 14:24:49,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2024-02-07 14:24:49,527 INFO L175 Difference]: Start difference. First operand has 165 places, 129 transitions, 1357 flow. Second operand 7 states and 202 transitions. [2024-02-07 14:24:49,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 193 transitions, 2052 flow [2024-02-07 14:24:49,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 193 transitions, 1972 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-07 14:24:49,646 INFO L231 Difference]: Finished difference. Result has 168 places, 130 transitions, 1371 flow [2024-02-07 14:24:49,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1371, PETRI_PLACES=168, PETRI_TRANSITIONS=130} [2024-02-07 14:24:49,647 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 101 predicate places. [2024-02-07 14:24:49,647 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 130 transitions, 1371 flow [2024-02-07 14:24:49,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:49,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:49,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-07 14:24:49,648 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:49,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2014991955, now seen corresponding path program 12 times [2024-02-07 14:24:49,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:49,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8190718] [2024-02-07 14:24:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8190718] [2024-02-07 14:24:49,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8190718] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630397099] [2024-02-07 14:24:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:49,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:49,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:49,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:49,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:49,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:49,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 130 transitions, 1371 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:49,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:49,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:50,661 INFO L124 PetriNetUnfolderBase]: 4911/9803 cut-off events. [2024-02-07 14:24:50,661 INFO L125 PetriNetUnfolderBase]: For 31003/31003 co-relation queries the response was YES. [2024-02-07 14:24:50,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28565 conditions, 9803 events. 4911/9803 cut-off events. For 31003/31003 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 82159 event pairs, 3101 based on Foata normal form. 8/9426 useless extension candidates. Maximal degree in co-relation 28514. Up to 6389 conditions per place. [2024-02-07 14:24:50,742 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 170 selfloop transitions, 32 changer transitions 0/216 dead transitions. [2024-02-07 14:24:50,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 216 transitions, 2175 flow [2024-02-07 14:24:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-02-07 14:24:50,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265938069216755 [2024-02-07 14:24:50,743 INFO L175 Difference]: Start difference. First operand has 168 places, 130 transitions, 1371 flow. Second operand 9 states and 254 transitions. [2024-02-07 14:24:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 216 transitions, 2175 flow [2024-02-07 14:24:50,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 216 transitions, 2123 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:50,861 INFO L231 Difference]: Finished difference. Result has 177 places, 132 transitions, 1423 flow [2024-02-07 14:24:50,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1423, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2024-02-07 14:24:50,862 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 110 predicate places. [2024-02-07 14:24:50,862 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 1423 flow [2024-02-07 14:24:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:50,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:50,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-07 14:24:50,863 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:50,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1807639551, now seen corresponding path program 13 times [2024-02-07 14:24:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:50,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609935539] [2024-02-07 14:24:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:50,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609935539] [2024-02-07 14:24:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609935539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722920419] [2024-02-07 14:24:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:51,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:51,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:51,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:51,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 1423 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:51,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:51,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:51,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:51,827 INFO L124 PetriNetUnfolderBase]: 4899/9877 cut-off events. [2024-02-07 14:24:51,827 INFO L125 PetriNetUnfolderBase]: For 30229/30229 co-relation queries the response was YES. [2024-02-07 14:24:51,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28678 conditions, 9877 events. 4899/9877 cut-off events. For 30229/30229 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 83358 event pairs, 1612 based on Foata normal form. 8/9512 useless extension candidates. Maximal degree in co-relation 28624. Up to 5008 conditions per place. [2024-02-07 14:24:51,911 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 145 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-02-07 14:24:51,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 202 transitions, 2136 flow [2024-02-07 14:24:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-07 14:24:51,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49882903981264637 [2024-02-07 14:24:51,912 INFO L175 Difference]: Start difference. First operand has 177 places, 132 transitions, 1423 flow. Second operand 7 states and 213 transitions. [2024-02-07 14:24:51,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 202 transitions, 2136 flow [2024-02-07 14:24:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 202 transitions, 2071 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-07 14:24:52,052 INFO L231 Difference]: Finished difference. Result has 180 places, 134 transitions, 1503 flow [2024-02-07 14:24:52,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1503, PETRI_PLACES=180, PETRI_TRANSITIONS=134} [2024-02-07 14:24:52,053 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 113 predicate places. [2024-02-07 14:24:52,053 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 134 transitions, 1503 flow [2024-02-07 14:24:52,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:52,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-07 14:24:52,054 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:52,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash -876618759, now seen corresponding path program 14 times [2024-02-07 14:24:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384111258] [2024-02-07 14:24:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384111258] [2024-02-07 14:24:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384111258] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064679304] [2024-02-07 14:24:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:52,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:52,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 134 transitions, 1503 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:52,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:52,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:53,190 INFO L124 PetriNetUnfolderBase]: 4887/9786 cut-off events. [2024-02-07 14:24:53,190 INFO L125 PetriNetUnfolderBase]: For 33852/33852 co-relation queries the response was YES. [2024-02-07 14:24:53,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28974 conditions, 9786 events. 4887/9786 cut-off events. For 33852/33852 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82369 event pairs, 2447 based on Foata normal form. 8/9416 useless extension candidates. Maximal degree in co-relation 28918. Up to 4072 conditions per place. [2024-02-07 14:24:53,290 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 154 selfloop transitions, 45 changer transitions 0/213 dead transitions. [2024-02-07 14:24:53,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 213 transitions, 2312 flow [2024-02-07 14:24:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-02-07 14:24:53,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663023679417122 [2024-02-07 14:24:53,292 INFO L175 Difference]: Start difference. First operand has 180 places, 134 transitions, 1503 flow. Second operand 9 states and 256 transitions. [2024-02-07 14:24:53,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 213 transitions, 2312 flow [2024-02-07 14:24:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 213 transitions, 2245 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-02-07 14:24:53,464 INFO L231 Difference]: Finished difference. Result has 182 places, 134 transitions, 1539 flow [2024-02-07 14:24:53,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1539, PETRI_PLACES=182, PETRI_TRANSITIONS=134} [2024-02-07 14:24:53,465 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 115 predicate places. [2024-02-07 14:24:53,465 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 134 transitions, 1539 flow [2024-02-07 14:24:53,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:53,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:53,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-07 14:24:53,466 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:53,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1313093887, now seen corresponding path program 15 times [2024-02-07 14:24:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740698766] [2024-02-07 14:24:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:53,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740698766] [2024-02-07 14:24:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740698766] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205636327] [2024-02-07 14:24:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:53,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:53,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 134 transitions, 1539 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:53,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:53,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:54,707 INFO L124 PetriNetUnfolderBase]: 4875/9754 cut-off events. [2024-02-07 14:24:54,707 INFO L125 PetriNetUnfolderBase]: For 34896/34896 co-relation queries the response was YES. [2024-02-07 14:24:54,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28954 conditions, 9754 events. 4875/9754 cut-off events. For 34896/34896 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 81949 event pairs, 2611 based on Foata normal form. 8/9384 useless extension candidates. Maximal degree in co-relation 28900. Up to 4072 conditions per place. [2024-02-07 14:24:54,789 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 141 selfloop transitions, 34 changer transitions 0/189 dead transitions. [2024-02-07 14:24:54,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 189 transitions, 2182 flow [2024-02-07 14:24:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-02-07 14:24:54,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-02-07 14:24:54,791 INFO L175 Difference]: Start difference. First operand has 182 places, 134 transitions, 1539 flow. Second operand 7 states and 199 transitions. [2024-02-07 14:24:54,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 189 transitions, 2182 flow [2024-02-07 14:24:54,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 189 transitions, 2063 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-02-07 14:24:54,921 INFO L231 Difference]: Finished difference. Result has 177 places, 134 transitions, 1504 flow [2024-02-07 14:24:54,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1504, PETRI_PLACES=177, PETRI_TRANSITIONS=134} [2024-02-07 14:24:54,922 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 110 predicate places. [2024-02-07 14:24:54,922 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 134 transitions, 1504 flow [2024-02-07 14:24:54,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:54,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:54,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-07 14:24:54,923 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:54,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 458992619, now seen corresponding path program 16 times [2024-02-07 14:24:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:54,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143951202] [2024-02-07 14:24:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:54,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143951202] [2024-02-07 14:24:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143951202] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:55,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083606518] [2024-02-07 14:24:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:55,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:55,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:55,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 134 transitions, 1504 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:55,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:55,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:55,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,970 INFO L124 PetriNetUnfolderBase]: 5428/10880 cut-off events. [2024-02-07 14:24:55,971 INFO L125 PetriNetUnfolderBase]: For 33065/33065 co-relation queries the response was YES. [2024-02-07 14:24:56,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31624 conditions, 10880 events. 5428/10880 cut-off events. For 33065/33065 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 93442 event pairs, 1797 based on Foata normal form. 8/10485 useless extension candidates. Maximal degree in co-relation 31573. Up to 5312 conditions per place. [2024-02-07 14:24:56,077 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 178 selfloop transitions, 34 changer transitions 0/226 dead transitions. [2024-02-07 14:24:56,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 226 transitions, 2416 flow [2024-02-07 14:24:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-02-07 14:24:56,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959016393442623 [2024-02-07 14:24:56,079 INFO L175 Difference]: Start difference. First operand has 177 places, 134 transitions, 1504 flow. Second operand 8 states and 242 transitions. [2024-02-07 14:24:56,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 226 transitions, 2416 flow [2024-02-07 14:24:56,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 226 transitions, 2306 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-02-07 14:24:56,232 INFO L231 Difference]: Finished difference. Result has 177 places, 139 transitions, 1584 flow [2024-02-07 14:24:56,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1584, PETRI_PLACES=177, PETRI_TRANSITIONS=139} [2024-02-07 14:24:56,232 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 110 predicate places. [2024-02-07 14:24:56,233 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 139 transitions, 1584 flow [2024-02-07 14:24:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:56,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:56,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:56,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-07 14:24:56,233 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:56,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash 57386497, now seen corresponding path program 17 times [2024-02-07 14:24:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160649883] [2024-02-07 14:24:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:56,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:56,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160649883] [2024-02-07 14:24:56,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160649883] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:56,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:56,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:56,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396675713] [2024-02-07 14:24:56,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:56,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:56,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:56,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 139 transitions, 1584 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:56,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:56,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:56,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:57,356 INFO L124 PetriNetUnfolderBase]: 5573/11231 cut-off events. [2024-02-07 14:24:57,356 INFO L125 PetriNetUnfolderBase]: For 31451/31451 co-relation queries the response was YES. [2024-02-07 14:24:57,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32323 conditions, 11231 events. 5573/11231 cut-off events. For 31451/31451 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97395 event pairs, 1908 based on Foata normal form. 8/10802 useless extension candidates. Maximal degree in co-relation 32273. Up to 5312 conditions per place. [2024-02-07 14:24:57,435 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 165 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-02-07 14:24:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 213 transitions, 2364 flow [2024-02-07 14:24:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-07 14:24:57,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49882903981264637 [2024-02-07 14:24:57,437 INFO L175 Difference]: Start difference. First operand has 177 places, 139 transitions, 1584 flow. Second operand 7 states and 213 transitions. [2024-02-07 14:24:57,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 213 transitions, 2364 flow [2024-02-07 14:24:57,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 213 transitions, 2253 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-02-07 14:24:57,608 INFO L231 Difference]: Finished difference. Result has 180 places, 141 transitions, 1615 flow [2024-02-07 14:24:57,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1615, PETRI_PLACES=180, PETRI_TRANSITIONS=141} [2024-02-07 14:24:57,609 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 113 predicate places. [2024-02-07 14:24:57,609 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 141 transitions, 1615 flow [2024-02-07 14:24:57,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:57,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:57,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:57,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-07 14:24:57,610 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:57,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1436949379, now seen corresponding path program 18 times [2024-02-07 14:24:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616527983] [2024-02-07 14:24:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:57,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:57,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616527983] [2024-02-07 14:24:57,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616527983] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:57,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:57,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:57,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594158178] [2024-02-07 14:24:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:57,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:57,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 141 transitions, 1615 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:57,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:57,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:57,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:58,708 INFO L124 PetriNetUnfolderBase]: 5898/11832 cut-off events. [2024-02-07 14:24:58,708 INFO L125 PetriNetUnfolderBase]: For 33111/33111 co-relation queries the response was YES. [2024-02-07 14:24:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34217 conditions, 11832 events. 5898/11832 cut-off events. For 33111/33111 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103350 event pairs, 1813 based on Foata normal form. 8/11405 useless extension candidates. Maximal degree in co-relation 34167. Up to 5312 conditions per place. [2024-02-07 14:24:58,806 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 185 selfloop transitions, 40 changer transitions 0/239 dead transitions. [2024-02-07 14:24:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 239 transitions, 2551 flow [2024-02-07 14:24:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-02-07 14:24:58,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2024-02-07 14:24:58,807 INFO L175 Difference]: Start difference. First operand has 180 places, 141 transitions, 1615 flow. Second operand 9 states and 264 transitions. [2024-02-07 14:24:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 239 transitions, 2551 flow [2024-02-07 14:24:58,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 239 transitions, 2480 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:58,995 INFO L231 Difference]: Finished difference. Result has 188 places, 148 transitions, 1764 flow [2024-02-07 14:24:58,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1764, PETRI_PLACES=188, PETRI_TRANSITIONS=148} [2024-02-07 14:24:58,996 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 121 predicate places. [2024-02-07 14:24:58,996 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 148 transitions, 1764 flow [2024-02-07 14:24:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:58,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:58,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:58,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-07 14:24:58,996 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:24:58,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:58,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1027219419, now seen corresponding path program 19 times [2024-02-07 14:24:58,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:58,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219438165] [2024-02-07 14:24:58,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:59,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219438165] [2024-02-07 14:24:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219438165] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361725326] [2024-02-07 14:24:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:59,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:24:59,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 148 transitions, 1764 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:59,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:24:59,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:00,165 INFO L124 PetriNetUnfolderBase]: 5902/11876 cut-off events. [2024-02-07 14:25:00,165 INFO L125 PetriNetUnfolderBase]: For 36594/36594 co-relation queries the response was YES. [2024-02-07 14:25:00,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34511 conditions, 11876 events. 5902/11876 cut-off events. For 36594/36594 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103724 event pairs, 1953 based on Foata normal form. 8/11431 useless extension candidates. Maximal degree in co-relation 34457. Up to 5312 conditions per place. [2024-02-07 14:25:00,250 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 165 selfloop transitions, 44 changer transitions 0/223 dead transitions. [2024-02-07 14:25:00,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 223 transitions, 2563 flow [2024-02-07 14:25:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-07 14:25:00,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035128805620609 [2024-02-07 14:25:00,251 INFO L175 Difference]: Start difference. First operand has 188 places, 148 transitions, 1764 flow. Second operand 7 states and 215 transitions. [2024-02-07 14:25:00,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 223 transitions, 2563 flow [2024-02-07 14:25:00,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 223 transitions, 2502 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-07 14:25:00,435 INFO L231 Difference]: Finished difference. Result has 191 places, 149 transitions, 1832 flow [2024-02-07 14:25:00,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1832, PETRI_PLACES=191, PETRI_TRANSITIONS=149} [2024-02-07 14:25:00,435 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 124 predicate places. [2024-02-07 14:25:00,436 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 149 transitions, 1832 flow [2024-02-07 14:25:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:00,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:00,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-07 14:25:00,436 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:00,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:00,437 INFO L85 PathProgramCache]: Analyzing trace with hash -157403917, now seen corresponding path program 20 times [2024-02-07 14:25:00,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:00,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505854706] [2024-02-07 14:25:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:00,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505854706] [2024-02-07 14:25:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505854706] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284705853] [2024-02-07 14:25:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:00,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:00,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:00,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:00,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 149 transitions, 1832 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:00,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:00,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:01,540 INFO L124 PetriNetUnfolderBase]: 5890/11840 cut-off events. [2024-02-07 14:25:01,541 INFO L125 PetriNetUnfolderBase]: For 39138/39138 co-relation queries the response was YES. [2024-02-07 14:25:01,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34726 conditions, 11840 events. 5890/11840 cut-off events. For 39138/39138 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103373 event pairs, 2061 based on Foata normal form. 8/11395 useless extension candidates. Maximal degree in co-relation 34671. Up to 5312 conditions per place. [2024-02-07 14:25:01,643 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 157 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2024-02-07 14:25:01,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 205 transitions, 2493 flow [2024-02-07 14:25:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-02-07 14:25:01,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027322404371585 [2024-02-07 14:25:01,644 INFO L175 Difference]: Start difference. First operand has 191 places, 149 transitions, 1832 flow. Second operand 6 states and 184 transitions. [2024-02-07 14:25:01,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 205 transitions, 2493 flow [2024-02-07 14:25:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 205 transitions, 2418 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:01,885 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1831 flow [2024-02-07 14:25:01,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1831, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2024-02-07 14:25:01,886 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 126 predicate places. [2024-02-07 14:25:01,886 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1831 flow [2024-02-07 14:25:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:01,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:01,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-07 14:25:01,887 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1333828399, now seen corresponding path program 21 times [2024-02-07 14:25:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244243619] [2024-02-07 14:25:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244243619] [2024-02-07 14:25:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244243619] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:02,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:02,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201434293] [2024-02-07 14:25:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:02,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:02,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1831 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:02,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:02,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:03,176 INFO L124 PetriNetUnfolderBase]: 5878/11838 cut-off events. [2024-02-07 14:25:03,176 INFO L125 PetriNetUnfolderBase]: For 39986/39986 co-relation queries the response was YES. [2024-02-07 14:25:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34726 conditions, 11838 events. 5878/11838 cut-off events. For 39986/39986 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103791 event pairs, 1885 based on Foata normal form. 8/11395 useless extension candidates. Maximal degree in co-relation 34671. Up to 5312 conditions per place. [2024-02-07 14:25:03,275 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 166 selfloop transitions, 37 changer transitions 0/217 dead transitions. [2024-02-07 14:25:03,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 217 transitions, 2544 flow [2024-02-07 14:25:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 14:25:03,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964871194379391 [2024-02-07 14:25:03,277 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1831 flow. Second operand 7 states and 212 transitions. [2024-02-07 14:25:03,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 217 transitions, 2544 flow [2024-02-07 14:25:03,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 217 transitions, 2461 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:03,491 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1838 flow [2024-02-07 14:25:03,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1838, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2024-02-07 14:25:03,493 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 126 predicate places. [2024-02-07 14:25:03,493 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1838 flow [2024-02-07 14:25:03,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:03,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:03,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-07 14:25:03,494 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:03,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:03,494 INFO L85 PathProgramCache]: Analyzing trace with hash -382567499, now seen corresponding path program 22 times [2024-02-07 14:25:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:03,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867681447] [2024-02-07 14:25:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:03,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867681447] [2024-02-07 14:25:03,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867681447] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:03,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:03,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:03,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121646630] [2024-02-07 14:25:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:03,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:25:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:25:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:25:03,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:03,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1838 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:03,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:03,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:04,650 INFO L124 PetriNetUnfolderBase]: 5912/11928 cut-off events. [2024-02-07 14:25:04,650 INFO L125 PetriNetUnfolderBase]: For 40798/40800 co-relation queries the response was YES. [2024-02-07 14:25:04,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34839 conditions, 11928 events. 5912/11928 cut-off events. For 40798/40800 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 104501 event pairs, 1965 based on Foata normal form. 10/11485 useless extension candidates. Maximal degree in co-relation 34785. Up to 6830 conditions per place. [2024-02-07 14:25:04,754 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 157 selfloop transitions, 33 changer transitions 0/204 dead transitions. [2024-02-07 14:25:04,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 204 transitions, 2489 flow [2024-02-07 14:25:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-02-07 14:25:04,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48360655737704916 [2024-02-07 14:25:04,756 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1838 flow. Second operand 6 states and 177 transitions. [2024-02-07 14:25:04,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 204 transitions, 2489 flow [2024-02-07 14:25:04,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 204 transitions, 2393 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-07 14:25:04,943 INFO L231 Difference]: Finished difference. Result has 193 places, 153 transitions, 1892 flow [2024-02-07 14:25:04,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1892, PETRI_PLACES=193, PETRI_TRANSITIONS=153} [2024-02-07 14:25:04,944 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 126 predicate places. [2024-02-07 14:25:04,944 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 153 transitions, 1892 flow [2024-02-07 14:25:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:04,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:04,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-07 14:25:04,944 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:04,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1960847391, now seen corresponding path program 23 times [2024-02-07 14:25:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:04,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626460045] [2024-02-07 14:25:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626460045] [2024-02-07 14:25:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626460045] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:05,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934696288] [2024-02-07 14:25:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:05,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:05,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:05,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 153 transitions, 1892 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:05,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:05,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:05,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:06,216 INFO L124 PetriNetUnfolderBase]: 5951/11868 cut-off events. [2024-02-07 14:25:06,217 INFO L125 PetriNetUnfolderBase]: For 41579/41579 co-relation queries the response was YES. [2024-02-07 14:25:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35054 conditions, 11868 events. 5951/11868 cut-off events. For 41579/41579 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 102659 event pairs, 4165 based on Foata normal form. 8/11408 useless extension candidates. Maximal degree in co-relation 34999. Up to 8665 conditions per place. [2024-02-07 14:25:06,306 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 151 selfloop transitions, 39 changer transitions 0/204 dead transitions. [2024-02-07 14:25:06,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 204 transitions, 2533 flow [2024-02-07 14:25:06,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-07 14:25:06,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2024-02-07 14:25:06,308 INFO L175 Difference]: Start difference. First operand has 193 places, 153 transitions, 1892 flow. Second operand 7 states and 196 transitions. [2024-02-07 14:25:06,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 204 transitions, 2533 flow [2024-02-07 14:25:06,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 2458 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:06,465 INFO L231 Difference]: Finished difference. Result has 201 places, 160 transitions, 2027 flow [2024-02-07 14:25:06,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2027, PETRI_PLACES=201, PETRI_TRANSITIONS=160} [2024-02-07 14:25:06,466 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 134 predicate places. [2024-02-07 14:25:06,466 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 160 transitions, 2027 flow [2024-02-07 14:25:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:06,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:06,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:06,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-07 14:25:06,467 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:06,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash -789215437, now seen corresponding path program 24 times [2024-02-07 14:25:06,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:06,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983130969] [2024-02-07 14:25:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:06,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983130969] [2024-02-07 14:25:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983130969] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:06,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140154708] [2024-02-07 14:25:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:06,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:06,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:06,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 160 transitions, 2027 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:06,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:06,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:06,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:07,774 INFO L124 PetriNetUnfolderBase]: 6189/12358 cut-off events. [2024-02-07 14:25:07,774 INFO L125 PetriNetUnfolderBase]: For 43421/43421 co-relation queries the response was YES. [2024-02-07 14:25:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36854 conditions, 12358 events. 6189/12358 cut-off events. For 43421/43421 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 108002 event pairs, 3473 based on Foata normal form. 8/11908 useless extension candidates. Maximal degree in co-relation 36795. Up to 5651 conditions per place. [2024-02-07 14:25:07,889 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 196 selfloop transitions, 48 changer transitions 0/258 dead transitions. [2024-02-07 14:25:07,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 258 transitions, 3018 flow [2024-02-07 14:25:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:25:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:25:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-02-07 14:25:07,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451730418943534 [2024-02-07 14:25:07,890 INFO L175 Difference]: Start difference. First operand has 201 places, 160 transitions, 2027 flow. Second operand 9 states and 266 transitions. [2024-02-07 14:25:07,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 258 transitions, 3018 flow [2024-02-07 14:25:08,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 258 transitions, 2945 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:08,087 INFO L231 Difference]: Finished difference. Result has 211 places, 167 transitions, 2204 flow [2024-02-07 14:25:08,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2204, PETRI_PLACES=211, PETRI_TRANSITIONS=167} [2024-02-07 14:25:08,088 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 144 predicate places. [2024-02-07 14:25:08,088 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 167 transitions, 2204 flow [2024-02-07 14:25:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:08,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:08,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:08,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-07 14:25:08,089 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:08,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1080981109, now seen corresponding path program 25 times [2024-02-07 14:25:08,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:08,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436170763] [2024-02-07 14:25:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:08,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436170763] [2024-02-07 14:25:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436170763] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:08,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197943183] [2024-02-07 14:25:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:08,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:08,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 167 transitions, 2204 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:08,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:08,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:08,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:09,410 INFO L124 PetriNetUnfolderBase]: 6193/12406 cut-off events. [2024-02-07 14:25:09,410 INFO L125 PetriNetUnfolderBase]: For 47265/47265 co-relation queries the response was YES. [2024-02-07 14:25:09,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37250 conditions, 12406 events. 6193/12406 cut-off events. For 47265/47265 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 108758 event pairs, 3637 based on Foata normal form. 8/11940 useless extension candidates. Maximal degree in co-relation 37187. Up to 5651 conditions per place. [2024-02-07 14:25:09,527 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 173 selfloop transitions, 39 changer transitions 0/226 dead transitions. [2024-02-07 14:25:09,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 2880 flow [2024-02-07 14:25:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-02-07 14:25:09,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477751756440281 [2024-02-07 14:25:09,529 INFO L175 Difference]: Start difference. First operand has 211 places, 167 transitions, 2204 flow. Second operand 7 states and 204 transitions. [2024-02-07 14:25:09,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 2880 flow [2024-02-07 14:25:09,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 226 transitions, 2764 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-02-07 14:25:09,749 INFO L231 Difference]: Finished difference. Result has 214 places, 168 transitions, 2200 flow [2024-02-07 14:25:09,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2200, PETRI_PLACES=214, PETRI_TRANSITIONS=168} [2024-02-07 14:25:09,750 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 147 predicate places. [2024-02-07 14:25:09,750 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 168 transitions, 2200 flow [2024-02-07 14:25:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:09,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-07 14:25:09,751 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:09,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1933855059, now seen corresponding path program 26 times [2024-02-07 14:25:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516411233] [2024-02-07 14:25:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516411233] [2024-02-07 14:25:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516411233] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371784245] [2024-02-07 14:25:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:09,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:09,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 168 transitions, 2200 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:09,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:09,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:11,057 INFO L124 PetriNetUnfolderBase]: 6385/12791 cut-off events. [2024-02-07 14:25:11,057 INFO L125 PetriNetUnfolderBase]: For 47875/47875 co-relation queries the response was YES. [2024-02-07 14:25:11,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38490 conditions, 12791 events. 6385/12791 cut-off events. For 47875/47875 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 112848 event pairs, 2201 based on Foata normal form. 8/12326 useless extension candidates. Maximal degree in co-relation 38426. Up to 5805 conditions per place. [2024-02-07 14:25:11,186 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 208 selfloop transitions, 48 changer transitions 0/270 dead transitions. [2024-02-07 14:25:11,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 270 transitions, 3249 flow [2024-02-07 14:25:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:25:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:25:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-02-07 14:25:11,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225409836065574 [2024-02-07 14:25:11,187 INFO L175 Difference]: Start difference. First operand has 214 places, 168 transitions, 2200 flow. Second operand 8 states and 255 transitions. [2024-02-07 14:25:11,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 270 transitions, 3249 flow [2024-02-07 14:25:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 270 transitions, 3162 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:11,418 INFO L231 Difference]: Finished difference. Result has 221 places, 180 transitions, 2470 flow [2024-02-07 14:25:11,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2470, PETRI_PLACES=221, PETRI_TRANSITIONS=180} [2024-02-07 14:25:11,419 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 154 predicate places. [2024-02-07 14:25:11,419 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 180 transitions, 2470 flow [2024-02-07 14:25:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:11,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-07 14:25:11,420 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:11,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -850404639, now seen corresponding path program 27 times [2024-02-07 14:25:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:11,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109807738] [2024-02-07 14:25:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:11,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:11,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109807738] [2024-02-07 14:25:11,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109807738] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:11,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:11,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:11,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2202054] [2024-02-07 14:25:11,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:11,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:11,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 180 transitions, 2470 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:11,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:11,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:12,770 INFO L124 PetriNetUnfolderBase]: 6373/12809 cut-off events. [2024-02-07 14:25:12,771 INFO L125 PetriNetUnfolderBase]: For 49978/49978 co-relation queries the response was YES. [2024-02-07 14:25:12,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38849 conditions, 12809 events. 6373/12809 cut-off events. For 49978/49978 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 113138 event pairs, 3085 based on Foata normal form. 8/12348 useless extension candidates. Maximal degree in co-relation 38781. Up to 9643 conditions per place. [2024-02-07 14:25:12,893 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 201 selfloop transitions, 22 changer transitions 0/237 dead transitions. [2024-02-07 14:25:12,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 237 transitions, 3146 flow [2024-02-07 14:25:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-07 14:25:12,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2024-02-07 14:25:12,895 INFO L175 Difference]: Start difference. First operand has 221 places, 180 transitions, 2470 flow. Second operand 7 states and 210 transitions. [2024-02-07 14:25:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 237 transitions, 3146 flow [2024-02-07 14:25:13,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 237 transitions, 2978 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:13,146 INFO L231 Difference]: Finished difference. Result has 222 places, 183 transitions, 2414 flow [2024-02-07 14:25:13,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2414, PETRI_PLACES=222, PETRI_TRANSITIONS=183} [2024-02-07 14:25:13,146 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 155 predicate places. [2024-02-07 14:25:13,146 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 183 transitions, 2414 flow [2024-02-07 14:25:13,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:13,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:13,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:13,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-07 14:25:13,147 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:13,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1246108521, now seen corresponding path program 28 times [2024-02-07 14:25:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:13,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307806897] [2024-02-07 14:25:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:13,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:13,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:13,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307806897] [2024-02-07 14:25:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307806897] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:13,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:13,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128997481] [2024-02-07 14:25:13,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:13,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:13,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:13,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:13,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 183 transitions, 2414 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:13,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:13,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:13,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:14,427 INFO L124 PetriNetUnfolderBase]: 6377/12835 cut-off events. [2024-02-07 14:25:14,427 INFO L125 PetriNetUnfolderBase]: For 42428/42428 co-relation queries the response was YES. [2024-02-07 14:25:14,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38325 conditions, 12835 events. 6377/12835 cut-off events. For 42428/42428 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 113793 event pairs, 2405 based on Foata normal form. 8/12360 useless extension candidates. Maximal degree in co-relation 38260. Up to 5805 conditions per place. [2024-02-07 14:25:14,530 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 191 selfloop transitions, 41 changer transitions 0/246 dead transitions. [2024-02-07 14:25:14,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 246 transitions, 3113 flow [2024-02-07 14:25:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-07 14:25:14,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49882903981264637 [2024-02-07 14:25:14,531 INFO L175 Difference]: Start difference. First operand has 222 places, 183 transitions, 2414 flow. Second operand 7 states and 213 transitions. [2024-02-07 14:25:14,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 246 transitions, 3113 flow [2024-02-07 14:25:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 246 transitions, 3070 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:14,734 INFO L231 Difference]: Finished difference. Result has 227 places, 184 transitions, 2498 flow [2024-02-07 14:25:14,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2498, PETRI_PLACES=227, PETRI_TRANSITIONS=184} [2024-02-07 14:25:14,735 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 160 predicate places. [2024-02-07 14:25:14,735 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 184 transitions, 2498 flow [2024-02-07 14:25:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:14,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:14,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:14,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-07 14:25:14,736 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:14,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1365188613, now seen corresponding path program 29 times [2024-02-07 14:25:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015869885] [2024-02-07 14:25:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:14,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015869885] [2024-02-07 14:25:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015869885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783508253] [2024-02-07 14:25:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:14,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:14,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 14:25:14,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 184 transitions, 2498 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:14,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:14,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 14:25:14,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:16,051 INFO L124 PetriNetUnfolderBase]: 6365/12811 cut-off events. [2024-02-07 14:25:16,051 INFO L125 PetriNetUnfolderBase]: For 44855/44855 co-relation queries the response was YES. [2024-02-07 14:25:16,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38615 conditions, 12811 events. 6365/12811 cut-off events. For 44855/44855 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 113446 event pairs, 2233 based on Foata normal form. 8/12330 useless extension candidates. Maximal degree in co-relation 38548. Up to 5805 conditions per place. [2024-02-07 14:25:16,179 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 202 selfloop transitions, 55 changer transitions 0/271 dead transitions. [2024-02-07 14:25:16,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 271 transitions, 3281 flow [2024-02-07 14:25:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:25:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:25:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-02-07 14:25:16,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027322404371585 [2024-02-07 14:25:16,180 INFO L175 Difference]: Start difference. First operand has 227 places, 184 transitions, 2498 flow. Second operand 9 states and 276 transitions. [2024-02-07 14:25:16,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 271 transitions, 3281 flow [2024-02-07 14:25:16,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 271 transitions, 3076 flow, removed 5 selfloop flow, removed 21 redundant places. [2024-02-07 14:25:16,388 INFO L231 Difference]: Finished difference. Result has 214 places, 184 transitions, 2406 flow [2024-02-07 14:25:16,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2406, PETRI_PLACES=214, PETRI_TRANSITIONS=184} [2024-02-07 14:25:16,388 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 147 predicate places. [2024-02-07 14:25:16,388 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 184 transitions, 2406 flow [2024-02-07 14:25:16,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:16,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:16,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:16,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-07 14:25:16,389 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:16,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1759911344, now seen corresponding path program 1 times [2024-02-07 14:25:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894754823] [2024-02-07 14:25:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894754823] [2024-02-07 14:25:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894754823] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274978248] [2024-02-07 14:25:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:16,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:16,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:16,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:16,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:25:16,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 184 transitions, 2406 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:16,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:16,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:25:16,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:17,498 INFO L124 PetriNetUnfolderBase]: 6365/12644 cut-off events. [2024-02-07 14:25:17,498 INFO L125 PetriNetUnfolderBase]: For 41389/41391 co-relation queries the response was YES. [2024-02-07 14:25:17,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38099 conditions, 12644 events. 6365/12644 cut-off events. For 41389/41391 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 109921 event pairs, 5017 based on Foata normal form. 0/12160 useless extension candidates. Maximal degree in co-relation 38047. Up to 10308 conditions per place. [2024-02-07 14:25:17,603 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 169 selfloop transitions, 1 changer transitions 0/183 dead transitions. [2024-02-07 14:25:17,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 183 transitions, 2744 flow [2024-02-07 14:25:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-02-07 14:25:17,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098360655737705 [2024-02-07 14:25:17,604 INFO L175 Difference]: Start difference. First operand has 214 places, 184 transitions, 2406 flow. Second operand 3 states and 75 transitions. [2024-02-07 14:25:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 183 transitions, 2744 flow [2024-02-07 14:25:17,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 183 transitions, 2651 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:17,746 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 2313 flow [2024-02-07 14:25:17,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2313, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2024-02-07 14:25:17,747 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 141 predicate places. [2024-02-07 14:25:17,747 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 2313 flow [2024-02-07 14:25:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-07 14:25:17,748 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:17,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2053507179, now seen corresponding path program 1 times [2024-02-07 14:25:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536237144] [2024-02-07 14:25:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:17,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536237144] [2024-02-07 14:25:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536237144] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:17,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:17,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:25:17,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661957959] [2024-02-07 14:25:17,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:17,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:25:17,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:25:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:25:17,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2024-02-07 14:25:17,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 2313 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2024-02-07 14:25:17,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:17,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2024-02-07 14:25:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:18,905 INFO L124 PetriNetUnfolderBase]: 7125/13120 cut-off events. [2024-02-07 14:25:18,906 INFO L125 PetriNetUnfolderBase]: For 39450/39452 co-relation queries the response was YES. [2024-02-07 14:25:18,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39639 conditions, 13120 events. 7125/13120 cut-off events. For 39450/39452 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 105437 event pairs, 2709 based on Foata normal form. 2/13076 useless extension candidates. Maximal degree in co-relation 39589. Up to 6128 conditions per place. [2024-02-07 14:25:19,004 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 122 selfloop transitions, 86 changer transitions 0/218 dead transitions. [2024-02-07 14:25:19,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 218 transitions, 2942 flow [2024-02-07 14:25:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-02-07 14:25:19,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825136612021858 [2024-02-07 14:25:19,006 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 2313 flow. Second operand 6 states and 140 transitions. [2024-02-07 14:25:19,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 218 transitions, 2942 flow [2024-02-07 14:25:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 218 transitions, 2941 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:19,137 INFO L231 Difference]: Finished difference. Result has 213 places, 191 transitions, 2802 flow [2024-02-07 14:25:19,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2802, PETRI_PLACES=213, PETRI_TRANSITIONS=191} [2024-02-07 14:25:19,138 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 146 predicate places. [2024-02-07 14:25:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 191 transitions, 2802 flow [2024-02-07 14:25:19,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2024-02-07 14:25:19,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:19,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-07 14:25:19,139 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:19,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:19,139 INFO L85 PathProgramCache]: Analyzing trace with hash -726142165, now seen corresponding path program 1 times [2024-02-07 14:25:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738416775] [2024-02-07 14:25:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:19,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:19,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738416775] [2024-02-07 14:25:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738416775] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720189463] [2024-02-07 14:25:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:25:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:25:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:25:19,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:19,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 191 transitions, 2802 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:19,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:19,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:19,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:20,408 INFO L124 PetriNetUnfolderBase]: 6861/12555 cut-off events. [2024-02-07 14:25:20,408 INFO L125 PetriNetUnfolderBase]: For 51202/51204 co-relation queries the response was YES. [2024-02-07 14:25:20,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41051 conditions, 12555 events. 6861/12555 cut-off events. For 51202/51204 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 100580 event pairs, 2745 based on Foata normal form. 176/12727 useless extension candidates. Maximal degree in co-relation 40999. Up to 5638 conditions per place. [2024-02-07 14:25:20,469 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 67 selfloop transitions, 14 changer transitions 125/216 dead transitions. [2024-02-07 14:25:20,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 216 transitions, 3310 flow [2024-02-07 14:25:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-02-07 14:25:20,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419672131147541 [2024-02-07 14:25:20,470 INFO L175 Difference]: Start difference. First operand has 213 places, 191 transitions, 2802 flow. Second operand 5 states and 128 transitions. [2024-02-07 14:25:20,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 216 transitions, 3310 flow [2024-02-07 14:25:20,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 216 transitions, 3299 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:20,658 INFO L231 Difference]: Finished difference. Result has 218 places, 84 transitions, 1052 flow [2024-02-07 14:25:20,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1052, PETRI_PLACES=218, PETRI_TRANSITIONS=84} [2024-02-07 14:25:20,659 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 151 predicate places. [2024-02-07 14:25:20,659 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 84 transitions, 1052 flow [2024-02-07 14:25:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:20,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:20,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-07 14:25:20,660 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1852952311, now seen corresponding path program 2 times [2024-02-07 14:25:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060643008] [2024-02-07 14:25:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:20,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060643008] [2024-02-07 14:25:20,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060643008] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:20,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:20,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:20,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869989893] [2024-02-07 14:25:20,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:20,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:20,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 84 transitions, 1052 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:20,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:20,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:20,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:21,066 INFO L124 PetriNetUnfolderBase]: 1769/3300 cut-off events. [2024-02-07 14:25:21,066 INFO L125 PetriNetUnfolderBase]: For 17099/17101 co-relation queries the response was YES. [2024-02-07 14:25:21,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11380 conditions, 3300 events. 1769/3300 cut-off events. For 17099/17101 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20798 event pairs, 551 based on Foata normal form. 42/3336 useless extension candidates. Maximal degree in co-relation 11326. Up to 1339 conditions per place. [2024-02-07 14:25:21,085 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 51 selfloop transitions, 3 changer transitions 51/115 dead transitions. [2024-02-07 14:25:21,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 115 transitions, 1358 flow [2024-02-07 14:25:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-02-07 14:25:21,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412568306010929 [2024-02-07 14:25:21,086 INFO L175 Difference]: Start difference. First operand has 218 places, 84 transitions, 1052 flow. Second operand 6 states and 151 transitions. [2024-02-07 14:25:21,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 115 transitions, 1358 flow [2024-02-07 14:25:21,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 115 transitions, 1057 flow, removed 14 selfloop flow, removed 60 redundant places. [2024-02-07 14:25:21,113 INFO L231 Difference]: Finished difference. Result has 132 places, 57 transitions, 386 flow [2024-02-07 14:25:21,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=132, PETRI_TRANSITIONS=57} [2024-02-07 14:25:21,114 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 65 predicate places. [2024-02-07 14:25:21,114 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 57 transitions, 386 flow [2024-02-07 14:25:21,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:21,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:21,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-07 14:25:21,115 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:21,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1450900995, now seen corresponding path program 3 times [2024-02-07 14:25:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735878080] [2024-02-07 14:25:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:21,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735878080] [2024-02-07 14:25:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735878080] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:21,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:21,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:21,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217447096] [2024-02-07 14:25:21,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:21,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:25:21,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 57 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:21,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:25:21,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:21,423 INFO L124 PetriNetUnfolderBase]: 616/1165 cut-off events. [2024-02-07 14:25:21,423 INFO L125 PetriNetUnfolderBase]: For 1910/1910 co-relation queries the response was YES. [2024-02-07 14:25:21,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3517 conditions, 1165 events. 616/1165 cut-off events. For 1910/1910 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5859 event pairs, 263 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 3499. Up to 571 conditions per place. [2024-02-07 14:25:21,428 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 39 selfloop transitions, 8 changer transitions 37/95 dead transitions. [2024-02-07 14:25:21,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 95 transitions, 677 flow [2024-02-07 14:25:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-02-07 14:25:21,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262295081967213 [2024-02-07 14:25:21,430 INFO L175 Difference]: Start difference. First operand has 132 places, 57 transitions, 386 flow. Second operand 7 states and 182 transitions. [2024-02-07 14:25:21,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 95 transitions, 677 flow [2024-02-07 14:25:21,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 573 flow, removed 7 selfloop flow, removed 18 redundant places. [2024-02-07 14:25:21,434 INFO L231 Difference]: Finished difference. Result has 98 places, 50 transitions, 244 flow [2024-02-07 14:25:21,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=244, PETRI_PLACES=98, PETRI_TRANSITIONS=50} [2024-02-07 14:25:21,434 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 31 predicate places. [2024-02-07 14:25:21,434 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 50 transitions, 244 flow [2024-02-07 14:25:21,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:21,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-07 14:25:21,440 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:21,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash 677523691, now seen corresponding path program 4 times [2024-02-07 14:25:21,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:21,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052424095] [2024-02-07 14:25:21,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:21,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052424095] [2024-02-07 14:25:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052424095] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:21,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921974874] [2024-02-07 14:25:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:21,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:21,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 50 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:21,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:21,676 INFO L124 PetriNetUnfolderBase]: 446/832 cut-off events. [2024-02-07 14:25:21,676 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2024-02-07 14:25:21,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 832 events. 446/832 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3707 event pairs, 179 based on Foata normal form. 8/832 useless extension candidates. Maximal degree in co-relation 2316. Up to 345 conditions per place. [2024-02-07 14:25:21,680 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 36 selfloop transitions, 2 changer transitions 39/87 dead transitions. [2024-02-07 14:25:21,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 519 flow [2024-02-07 14:25:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:21,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-02-07 14:25:21,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981264637002342 [2024-02-07 14:25:21,681 INFO L175 Difference]: Start difference. First operand has 98 places, 50 transitions, 244 flow. Second operand 7 states and 170 transitions. [2024-02-07 14:25:21,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 519 flow [2024-02-07 14:25:21,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 481 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-07 14:25:21,684 INFO L231 Difference]: Finished difference. Result has 82 places, 41 transitions, 159 flow [2024-02-07 14:25:21,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=82, PETRI_TRANSITIONS=41} [2024-02-07 14:25:21,684 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-02-07 14:25:21,685 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 41 transitions, 159 flow [2024-02-07 14:25:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:21,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-07 14:25:21,685 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 14:25:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 774010579, now seen corresponding path program 5 times [2024-02-07 14:25:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154649412] [2024-02-07 14:25:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154649412] [2024-02-07 14:25:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154649412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961148530] [2024-02-07 14:25:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:21,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:21,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 41 transitions, 159 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:21,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:21,891 INFO L124 PetriNetUnfolderBase]: 224/422 cut-off events. [2024-02-07 14:25:21,891 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-02-07 14:25:21,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 422 events. 224/422 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 36 based on Foata normal form. 8/428 useless extension candidates. Maximal degree in co-relation 1166. Up to 244 conditions per place. [2024-02-07 14:25:21,893 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2024-02-07 14:25:21,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 52 transitions, 275 flow [2024-02-07 14:25:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-02-07 14:25:21,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36065573770491804 [2024-02-07 14:25:21,894 INFO L175 Difference]: Start difference. First operand has 82 places, 41 transitions, 159 flow. Second operand 6 states and 132 transitions. [2024-02-07 14:25:21,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 52 transitions, 275 flow [2024-02-07 14:25:21,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 52 transitions, 243 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-02-07 14:25:21,895 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-02-07 14:25:21,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-02-07 14:25:21,896 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2024-02-07 14:25:21,896 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-02-07 14:25:21,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:21,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 39 remaining) [2024-02-07 14:25:21,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-07 14:25:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-07 14:25:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-07 14:25:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-07 14:25:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-07 14:25:21,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-07 14:25:21,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-07 14:25:21,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-07 14:25:21,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-07 14:25:21,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-07 14:25:21,901 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-07 14:25:21,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-02-07 14:25:21,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-07 14:25:21,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-02-07 14:25:21,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-07 14:25:21,902 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (17 of 39 remaining) [2024-02-07 14:25:21,903 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-07 14:25:21,904 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-02-07 14:25:21,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-07 14:25:21,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-07 14:25:21,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-07 14:25:21,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-07 14:25:21,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-07 14:25:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-07 14:25:21,907 INFO L445 BasicCegarLoop]: Path program histogram: [29, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:21,911 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:25:21,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:25:21,914 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-07 14:25:21,915 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-07 14:25:21,915 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:25:21 BasicIcfg [2024-02-07 14:25:21,915 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:25:21,916 INFO L158 Benchmark]: Toolchain (without parser) took 54087.55ms. Allocated memory was 281.0MB in the beginning and 3.3GB in the end (delta: 3.0GB). Free memory was 245.1MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 924.5MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,916 INFO L158 Benchmark]: CDTParser took 0.88ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 73.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:21,916 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 281.0MB. Free memory is still 248.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:21,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.17ms. Allocated memory is still 281.0MB. Free memory was 244.9MB in the beginning and 221.1MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.58ms. Allocated memory is still 281.0MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,917 INFO L158 Benchmark]: Boogie Preprocessor took 33.56ms. Allocated memory is still 281.0MB. Free memory was 219.0MB in the beginning and 215.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,917 INFO L158 Benchmark]: RCFGBuilder took 515.99ms. Allocated memory is still 281.0MB. Free memory was 215.9MB in the beginning and 181.3MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,917 INFO L158 Benchmark]: TraceAbstraction took 52965.13ms. Allocated memory was 281.0MB in the beginning and 3.3GB in the end (delta: 3.0GB). Free memory was 181.3MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 862.6MB. Max. memory is 16.1GB. [2024-02-07 14:25:21,918 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88ms. Allocated memory is still 140.5MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 73.3kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 281.0MB. Free memory is still 248.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.17ms. Allocated memory is still 281.0MB. Free memory was 244.9MB in the beginning and 221.1MB in the end (delta: 23.8MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.58ms. Allocated memory is still 281.0MB. Free memory was 221.1MB in the beginning and 219.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.56ms. Allocated memory is still 281.0MB. Free memory was 219.0MB in the beginning and 215.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 515.99ms. Allocated memory is still 281.0MB. Free memory was 215.9MB in the beginning and 181.3MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 52965.13ms. Allocated memory was 281.0MB in the beginning and 3.3GB in the end (delta: 3.0GB). Free memory was 181.3MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 862.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 724]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 728]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 729]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 733]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 734]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 741]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 744]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 748]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 749]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 755]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 756]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 785]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 786]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 787]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 791]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 792]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 100 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 52.9s, OverallIterations: 54, TraceHistogramMax: 1, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 46.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2871 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2825 mSDsluCounter, 167 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9001 IncrementalHoareTripleChecker+Invalid, 9129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 29 mSDtfsCounter, 9001 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2802occurred in iteration=49, InterpolantAutomatonStates: 342, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1270 NumberOfCodeBlocks, 1270 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1216 ConstructedInterpolants, 0 QuantifiedInterpolants, 9658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 54 InterpolantComputations, 54 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:25:21,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE