./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:26:12,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:26:12,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:26:12,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:26:12,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:26:12,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:26:12,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:26:12,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:26:12,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:26:12,380 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:26:12,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:26:12,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:26:12,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:26:12,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:26:12,382 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:26:12,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:26:12,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:26:12,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:26:12,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:26:12,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:26:12,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:26:12,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:26:12,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:26:12,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:26:12,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:26:12,390 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:26:12,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:26:12,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:26:12,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:26:12,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:26:12,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:26:12,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:26:12,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:12,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:26:12,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:26:12,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:26:12,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:26:12,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:26:12,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:26:12,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:26:12,394 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:26:12,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:26:12,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:26:12,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:26:12,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:26:12,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:26:12,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:26:12,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:26:12,627 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:26:12,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:13,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:26:14,087 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:26:14,088 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:14,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be99c3fb/7ec2dd25d7aa4ca9818bd6e9c4d0c417/FLAG82829b220 [2024-06-27 18:26:14,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4be99c3fb/7ec2dd25d7aa4ca9818bd6e9c4d0c417 [2024-06-27 18:26:14,126 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:26:14,127 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:26:14,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:26:14,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:26:14,279 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:26:14,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:14,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:26:14,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:26:14,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:14" (1/2) ... [2024-06-27 18:26:14,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6c66ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:14, skipping insertion in model container [2024-06-27 18:26:14,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:14" (1/2) ... [2024-06-27 18:26:14,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3edbd582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:14, skipping insertion in model container [2024-06-27 18:26:14,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:14" (2/2) ... [2024-06-27 18:26:14,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6c66ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14, skipping insertion in model container [2024-06-27 18:26:14,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:14" (2/2) ... [2024-06-27 18:26:14,287 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:26:14,348 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:26:14,350 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 18:26:14,350 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 18:26:14,350 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 18:26:14,350 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:26:14,350 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-27 18:26:14,376 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:26:14,507 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:26:14,645 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:14,663 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:26:14,703 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:26:14,811 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:14,850 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:26:14,851 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14 WrapperNode [2024-06-27 18:26:14,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:14,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:14,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:26:14,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:26:14,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,903 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 18:26:14,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:14,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:26:14,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:26:14,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:26:14,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:26:14,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:26:14,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:26:14,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:26:14,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:26:14,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (1/1) ... [2024-06-27 18:26:14,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:14,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:26:14,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:26:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:26:15,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:26:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:26:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:26:15,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:26:15,054 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:26:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:26:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:26:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:26:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:26:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:26:15,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:26:15,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:26:15,057 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:26:15,226 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:26:15,230 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:26:15,587 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:26:15,587 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:26:15,735 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:26:15,735 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:26:15,736 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:15 BoogieIcfgContainer [2024-06-27 18:26:15,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:26:15,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:26:15,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:26:15,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:26:15,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:26:14" (1/4) ... [2024-06-27 18:26:15,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a383d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:26:15, skipping insertion in model container [2024-06-27 18:26:15,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:14" (2/4) ... [2024-06-27 18:26:15,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a383d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:26:15, skipping insertion in model container [2024-06-27 18:26:15,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:14" (3/4) ... [2024-06-27 18:26:15,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a383d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:26:15, skipping insertion in model container [2024-06-27 18:26:15,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:15" (4/4) ... [2024-06-27 18:26:15,747 INFO L112 eAbstractionObserver]: Analyzing ICFG mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:15,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:26:15,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:26:15,764 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:26:15,814 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:26:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:26:15,882 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:26:15,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:26:15,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:26:15,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:26:15,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:26:15,907 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;@6ee5cebd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:26:15,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:26:15,914 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:26:15,915 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:26:15,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:15,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:26:15,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:15,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 351062661, now seen corresponding path program 1 times [2024-06-27 18:26:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622483669] [2024-06-27 18:26:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622483669] [2024-06-27 18:26:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622483669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:16,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:16,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:26:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835130636] [2024-06-27 18:26:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:26:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:26:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:26:16,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:26:16,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:26:17,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:17,784 INFO L124 PetriNetUnfolderBase]: 4500/7408 cut-off events. [2024-06-27 18:26:17,785 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 18:26:17,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13971 conditions, 7408 events. 4500/7408 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48858 event pairs, 3527 based on Foata normal form. 211/7038 useless extension candidates. Maximal degree in co-relation 13959. Up to 6446 conditions per place. [2024-06-27 18:26:17,825 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:26:17,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 225 flow [2024-06-27 18:26:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:26:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:26:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 18:26:17,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:26:17,836 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 94 transitions. [2024-06-27 18:26:17,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 225 flow [2024-06-27 18:26:17,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:17,840 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:26:17,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:26:17,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:26:17,845 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:26:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:17,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:26:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:26:17,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:17,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 351063412, now seen corresponding path program 1 times [2024-06-27 18:26:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501178833] [2024-06-27 18:26:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501178833] [2024-06-27 18:26:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501178833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:26:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752244088] [2024-06-27 18:26:17,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:17,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:26:17,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:26:17,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:26:17,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-27 18:26:17,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-27 18:26:17,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:18,163 INFO L124 PetriNetUnfolderBase]: 950/1800 cut-off events. [2024-06-27 18:26:18,163 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:26:18,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1800 events. 950/1800 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11865 event pairs, 463 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 3490. Up to 1207 conditions per place. [2024-06-27 18:26:18,173 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-06-27 18:26:18,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 232 flow [2024-06-27 18:26:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:26:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:26:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 18:26:18,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-27 18:26:18,175 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 110 transitions. [2024-06-27 18:26:18,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 232 flow [2024-06-27 18:26:18,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:26:18,178 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-06-27 18:26:18,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:26:18,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:26:18,179 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-06-27 18:26:18,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:18,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:18,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:26:18,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:18,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1930490349, now seen corresponding path program 1 times [2024-06-27 18:26:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685537229] [2024-06-27 18:26:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685537229] [2024-06-27 18:26:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685537229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:18,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:26:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148332236] [2024-06-27 18:26:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:26:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:26:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:26:18,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:26:18,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-06-27 18:26:18,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:18,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:26:18,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:19,593 INFO L124 PetriNetUnfolderBase]: 3821/6190 cut-off events. [2024-06-27 18:26:19,594 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-06-27 18:26:19,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13115 conditions, 6190 events. 3821/6190 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38425 event pairs, 2504 based on Foata normal form. 3/5974 useless extension candidates. Maximal degree in co-relation 13102. Up to 5470 conditions per place. [2024-06-27 18:26:19,640 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 50 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-06-27 18:26:19,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 314 flow [2024-06-27 18:26:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:26:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:26:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 18:26:19,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-27 18:26:19,643 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 116 transitions. [2024-06-27 18:26:19,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 314 flow [2024-06-27 18:26:19,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:19,647 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-06-27 18:26:19,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:26:19,648 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:26:19,648 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-06-27 18:26:19,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-06-27 18:26:19,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:19,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:19,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:26:19,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:19,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash 284341944, now seen corresponding path program 1 times [2024-06-27 18:26:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:19,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968386153] [2024-06-27 18:26:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:20,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968386153] [2024-06-27 18:26:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968386153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:20,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:20,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:26:20,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160262148] [2024-06-27 18:26:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:26:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:26:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:26:20,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:26:20,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:20,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:20,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:26:20,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:21,059 INFO L124 PetriNetUnfolderBase]: 3310/5490 cut-off events. [2024-06-27 18:26:21,059 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-06-27 18:26:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 5490 events. 3310/5490 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34341 event pairs, 1652 based on Foata normal form. 5/5315 useless extension candidates. Maximal degree in co-relation 12540. Up to 4663 conditions per place. [2024-06-27 18:26:21,101 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 66 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-27 18:26:21,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 95 transitions, 493 flow [2024-06-27 18:26:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:26:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:26:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-27 18:26:21,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6340425531914894 [2024-06-27 18:26:21,106 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 5 states and 149 transitions. [2024-06-27 18:26:21,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 95 transitions, 493 flow [2024-06-27 18:26:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:26:21,111 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 297 flow [2024-06-27 18:26:21,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-27 18:26:21,113 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-27 18:26:21,113 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 297 flow [2024-06-27 18:26:21,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:21,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:21,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:21,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:26:21,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:21,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash -440268798, now seen corresponding path program 1 times [2024-06-27 18:26:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937591619] [2024-06-27 18:26:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:22,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937591619] [2024-06-27 18:26:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937591619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:26:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067957202] [2024-06-27 18:26:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:22,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:26:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:26:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:26:22,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:26:22,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:26:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:22,753 INFO L124 PetriNetUnfolderBase]: 3332/5127 cut-off events. [2024-06-27 18:26:22,768 INFO L125 PetriNetUnfolderBase]: For 5556/5559 co-relation queries the response was YES. [2024-06-27 18:26:22,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14262 conditions, 5127 events. 3332/5127 cut-off events. For 5556/5559 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 29403 event pairs, 1216 based on Foata normal form. 7/5096 useless extension candidates. Maximal degree in co-relation 14243. Up to 4629 conditions per place. [2024-06-27 18:26:22,807 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 33 changer transitions 0/122 dead transitions. [2024-06-27 18:26:22,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 122 transitions, 751 flow [2024-06-27 18:26:22,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 18:26:22,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-06-27 18:26:22,822 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 297 flow. Second operand 6 states and 178 transitions. [2024-06-27 18:26:22,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 122 transitions, 751 flow [2024-06-27 18:26:22,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 122 transitions, 743 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:26:22,826 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 507 flow [2024-06-27 18:26:22,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2024-06-27 18:26:22,827 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-27 18:26:22,827 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 507 flow [2024-06-27 18:26:22,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:22,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:22,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:22,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:26:22,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:22,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1625277929, now seen corresponding path program 1 times [2024-06-27 18:26:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761219271] [2024-06-27 18:26:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:22,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:23,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761219271] [2024-06-27 18:26:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761219271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:23,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:23,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155015541] [2024-06-27 18:26:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:23,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:24,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:26:24,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:24,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:24,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:26:24,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:24,753 INFO L124 PetriNetUnfolderBase]: 3359/5650 cut-off events. [2024-06-27 18:26:24,753 INFO L125 PetriNetUnfolderBase]: For 11455/11461 co-relation queries the response was YES. [2024-06-27 18:26:24,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17238 conditions, 5650 events. 3359/5650 cut-off events. For 11455/11461 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35948 event pairs, 1400 based on Foata normal form. 14/5483 useless extension candidates. Maximal degree in co-relation 17213. Up to 4594 conditions per place. [2024-06-27 18:26:24,789 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 85 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2024-06-27 18:26:24,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 947 flow [2024-06-27 18:26:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-27 18:26:24,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139817629179332 [2024-06-27 18:26:24,791 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 507 flow. Second operand 7 states and 202 transitions. [2024-06-27 18:26:24,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 947 flow [2024-06-27 18:26:24,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 913 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-27 18:26:24,807 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 577 flow [2024-06-27 18:26:24,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-27 18:26:24,808 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-27 18:26:24,808 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 577 flow [2024-06-27 18:26:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:24,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:24,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:26:24,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:24,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash -885212333, now seen corresponding path program 1 times [2024-06-27 18:26:24,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:24,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036072790] [2024-06-27 18:26:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:24,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:25,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036072790] [2024-06-27 18:26:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036072790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:25,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:25,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:26:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645415423] [2024-06-27 18:26:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:25,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:26:25,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:25,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:26:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:26:25,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:25,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:25,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:25,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:25,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:25,958 INFO L124 PetriNetUnfolderBase]: 3905/6513 cut-off events. [2024-06-27 18:26:25,958 INFO L125 PetriNetUnfolderBase]: For 14016/14016 co-relation queries the response was YES. [2024-06-27 18:26:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19809 conditions, 6513 events. 3905/6513 cut-off events. For 14016/14016 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41613 event pairs, 1648 based on Foata normal form. 2/6327 useless extension candidates. Maximal degree in co-relation 19780. Up to 5591 conditions per place. [2024-06-27 18:26:26,009 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 74 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-27 18:26:26,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 793 flow [2024-06-27 18:26:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:26:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:26:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 18:26:26,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 18:26:26,011 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 577 flow. Second operand 5 states and 118 transitions. [2024-06-27 18:26:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 793 flow [2024-06-27 18:26:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 703 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:26,023 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 527 flow [2024-06-27 18:26:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-27 18:26:26,024 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-27 18:26:26,025 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 527 flow [2024-06-27 18:26:26,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:26,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:26,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:26,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:26:26,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:26,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1684721572, now seen corresponding path program 1 times [2024-06-27 18:26:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958170815] [2024-06-27 18:26:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958170815] [2024-06-27 18:26:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958170815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693572298] [2024-06-27 18:26:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:26,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:26,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 527 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:26,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:26,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:26,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:27,479 INFO L124 PetriNetUnfolderBase]: 4569/7441 cut-off events. [2024-06-27 18:26:27,479 INFO L125 PetriNetUnfolderBase]: For 17057/17057 co-relation queries the response was YES. [2024-06-27 18:26:27,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22401 conditions, 7441 events. 4569/7441 cut-off events. For 17057/17057 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46811 event pairs, 1838 based on Foata normal form. 6/7222 useless extension candidates. Maximal degree in co-relation 22370. Up to 6397 conditions per place. [2024-06-27 18:26:27,518 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 93 selfloop transitions, 21 changer transitions 0/122 dead transitions. [2024-06-27 18:26:27,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 925 flow [2024-06-27 18:26:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:26:27,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:26:27,520 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 527 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:26:27,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 925 flow [2024-06-27 18:26:27,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 886 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:27,534 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 637 flow [2024-06-27 18:26:27,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-06-27 18:26:27,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-06-27 18:26:27,536 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 637 flow [2024-06-27 18:26:27,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:27,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:27,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:27,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:26:27,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:27,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash -693404881, now seen corresponding path program 1 times [2024-06-27 18:26:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:27,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778358699] [2024-06-27 18:26:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:28,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:28,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778358699] [2024-06-27 18:26:28,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778358699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:28,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:28,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:28,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449741883] [2024-06-27 18:26:28,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:28,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:28,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:28,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:28,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:28,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:28,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:28,855 INFO L124 PetriNetUnfolderBase]: 4131/6710 cut-off events. [2024-06-27 18:26:28,856 INFO L125 PetriNetUnfolderBase]: For 21005/21022 co-relation queries the response was YES. [2024-06-27 18:26:28,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22448 conditions, 6710 events. 4131/6710 cut-off events. For 21005/21022 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41629 event pairs, 1476 based on Foata normal form. 10/6508 useless extension candidates. Maximal degree in co-relation 22415. Up to 5762 conditions per place. [2024-06-27 18:26:28,902 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 91 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-06-27 18:26:28,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 999 flow [2024-06-27 18:26:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:26:28,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 18:26:28,904 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 637 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:26:28,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 999 flow [2024-06-27 18:26:28,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 981 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:26:28,922 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 705 flow [2024-06-27 18:26:28,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2024-06-27 18:26:28,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-27 18:26:28,922 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 705 flow [2024-06-27 18:26:28,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:28,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:28,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:26:28,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:28,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash -285483631, now seen corresponding path program 2 times [2024-06-27 18:26:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:28,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102993755] [2024-06-27 18:26:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102993755] [2024-06-27 18:26:29,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102993755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:29,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:29,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:29,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467285002] [2024-06-27 18:26:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:29,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:29,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:29,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:29,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:29,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:29,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:29,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:30,492 INFO L124 PetriNetUnfolderBase]: 4195/6919 cut-off events. [2024-06-27 18:26:30,493 INFO L125 PetriNetUnfolderBase]: For 21886/21894 co-relation queries the response was YES. [2024-06-27 18:26:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22789 conditions, 6919 events. 4195/6919 cut-off events. For 21886/21894 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44184 event pairs, 1703 based on Foata normal form. 2/6703 useless extension candidates. Maximal degree in co-relation 22753. Up to 5954 conditions per place. [2024-06-27 18:26:30,566 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 92 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2024-06-27 18:26:30,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 973 flow [2024-06-27 18:26:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:26:30,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:26:30,568 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 705 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:26:30,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 973 flow [2024-06-27 18:26:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 940 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:30,597 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 706 flow [2024-06-27 18:26:30,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-06-27 18:26:30,597 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-27 18:26:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 706 flow [2024-06-27 18:26:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:30,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:30,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:30,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:26:30,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:30,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:30,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1225033880, now seen corresponding path program 1 times [2024-06-27 18:26:30,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:30,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441051437] [2024-06-27 18:26:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:31,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441051437] [2024-06-27 18:26:31,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441051437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:31,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:31,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655787312] [2024-06-27 18:26:31,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:31,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:31,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:31,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 706 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:31,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:31,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:31,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:32,571 INFO L124 PetriNetUnfolderBase]: 4996/7895 cut-off events. [2024-06-27 18:26:32,572 INFO L125 PetriNetUnfolderBase]: For 28146/28155 co-relation queries the response was YES. [2024-06-27 18:26:32,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 7895 events. 4996/7895 cut-off events. For 28146/28155 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48302 event pairs, 1484 based on Foata normal form. 14/7675 useless extension candidates. Maximal degree in co-relation 26659. Up to 6382 conditions per place. [2024-06-27 18:26:32,648 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 123 selfloop transitions, 34 changer transitions 0/165 dead transitions. [2024-06-27 18:26:32,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 165 transitions, 1396 flow [2024-06-27 18:26:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:26:32,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-27 18:26:32,651 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 706 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:26:32,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 165 transitions, 1396 flow [2024-06-27 18:26:32,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 165 transitions, 1340 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:32,683 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 937 flow [2024-06-27 18:26:32,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-06-27 18:26:32,684 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-27 18:26:32,684 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 937 flow [2024-06-27 18:26:32,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:32,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:32,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:26:32,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:32,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash -259790344, now seen corresponding path program 2 times [2024-06-27 18:26:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379616889] [2024-06-27 18:26:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:33,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:33,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379616889] [2024-06-27 18:26:33,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379616889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:33,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:33,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315962032] [2024-06-27 18:26:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:33,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:33,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:33,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:33,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:33,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:34,652 INFO L124 PetriNetUnfolderBase]: 5080/8214 cut-off events. [2024-06-27 18:26:34,652 INFO L125 PetriNetUnfolderBase]: For 39963/39963 co-relation queries the response was YES. [2024-06-27 18:26:34,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 8214 events. 5080/8214 cut-off events. For 39963/39963 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52037 event pairs, 1826 based on Foata normal form. 6/7977 useless extension candidates. Maximal degree in co-relation 31531. Up to 7117 conditions per place. [2024-06-27 18:26:34,737 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 124 selfloop transitions, 26 changer transitions 0/158 dead transitions. [2024-06-27 18:26:34,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1452 flow [2024-06-27 18:26:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:26:34,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:26:34,740 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 937 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:26:34,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1452 flow [2024-06-27 18:26:34,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 158 transitions, 1414 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 18:26:34,795 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 1093 flow [2024-06-27 18:26:34,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-06-27 18:26:34,796 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-27 18:26:34,796 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 1093 flow [2024-06-27 18:26:34,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:34,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:34,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:26:34,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:34,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 185017694, now seen corresponding path program 3 times [2024-06-27 18:26:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401781651] [2024-06-27 18:26:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401781651] [2024-06-27 18:26:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401781651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:35,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:35,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917933653] [2024-06-27 18:26:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:35,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:35,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:35,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:35,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:35,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:36,770 INFO L124 PetriNetUnfolderBase]: 5108/8244 cut-off events. [2024-06-27 18:26:36,771 INFO L125 PetriNetUnfolderBase]: For 44756/44756 co-relation queries the response was YES. [2024-06-27 18:26:36,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32500 conditions, 8244 events. 5108/8244 cut-off events. For 44756/44756 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52153 event pairs, 1818 based on Foata normal form. 6/8009 useless extension candidates. Maximal degree in co-relation 32454. Up to 7017 conditions per place. [2024-06-27 18:26:36,859 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 130 selfloop transitions, 32 changer transitions 0/170 dead transitions. [2024-06-27 18:26:36,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 170 transitions, 1659 flow [2024-06-27 18:26:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:26:36,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:26:36,861 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 1093 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:26:36,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 170 transitions, 1659 flow [2024-06-27 18:26:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1594 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:36,920 INFO L231 Difference]: Finished difference. Result has 106 places, 134 transitions, 1203 flow [2024-06-27 18:26:36,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1203, PETRI_PLACES=106, PETRI_TRANSITIONS=134} [2024-06-27 18:26:36,921 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-06-27 18:26:36,921 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 134 transitions, 1203 flow [2024-06-27 18:26:36,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:36,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:36,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:36,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:26:36,922 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:36,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash 185293563, now seen corresponding path program 1 times [2024-06-27 18:26:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759820326] [2024-06-27 18:26:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:37,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:37,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759820326] [2024-06-27 18:26:37,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759820326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:37,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:37,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:37,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980938663] [2024-06-27 18:26:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:37,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:37,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:37,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:37,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 134 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:37,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:37,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:37,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:39,055 INFO L124 PetriNetUnfolderBase]: 5131/8313 cut-off events. [2024-06-27 18:26:39,055 INFO L125 PetriNetUnfolderBase]: For 51890/51890 co-relation queries the response was YES. [2024-06-27 18:26:39,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33816 conditions, 8313 events. 5131/8313 cut-off events. For 51890/51890 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 52990 event pairs, 1757 based on Foata normal form. 6/8067 useless extension candidates. Maximal degree in co-relation 33768. Up to 7108 conditions per place. [2024-06-27 18:26:39,106 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 135 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-27 18:26:39,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1729 flow [2024-06-27 18:26:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:26:39,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:26:39,108 INFO L175 Difference]: Start difference. First operand has 106 places, 134 transitions, 1203 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:26:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1729 flow [2024-06-27 18:26:39,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 176 transitions, 1673 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:39,145 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1259 flow [2024-06-27 18:26:39,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=103, 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=7, PETRI_FLOW=1259, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-27 18:26:39,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-27 18:26:39,146 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1259 flow [2024-06-27 18:26:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:39,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:39,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:39,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:26:39,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:39,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash -945898253, now seen corresponding path program 1 times [2024-06-27 18:26:39,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:39,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600564942] [2024-06-27 18:26:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600564942] [2024-06-27 18:26:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600564942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:26:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749356269] [2024-06-27 18:26:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:39,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:26:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:26:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:26:39,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:39,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1259 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-06-27 18:26:39,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:39,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:39,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:40,629 INFO L124 PetriNetUnfolderBase]: 5128/8294 cut-off events. [2024-06-27 18:26:40,629 INFO L125 PetriNetUnfolderBase]: For 55666/55666 co-relation queries the response was YES. [2024-06-27 18:26:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34593 conditions, 8294 events. 5128/8294 cut-off events. For 55666/55666 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 52700 event pairs, 1825 based on Foata normal form. 1/8048 useless extension candidates. Maximal degree in co-relation 34543. Up to 7288 conditions per place. [2024-06-27 18:26:40,680 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 129 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2024-06-27 18:26:40,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 151 transitions, 1577 flow [2024-06-27 18:26:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:26:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:26:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-27 18:26:40,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 18:26:40,682 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1259 flow. Second operand 5 states and 110 transitions. [2024-06-27 18:26:40,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 151 transitions, 1577 flow [2024-06-27 18:26:40,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 151 transitions, 1475 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:40,719 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1195 flow [2024-06-27 18:26:40,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1195, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-27 18:26:40,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-27 18:26:40,719 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1195 flow [2024-06-27 18:26:40,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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) [2024-06-27 18:26:40,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:40,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:40,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:26:40,720 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:40,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash -682468940, now seen corresponding path program 1 times [2024-06-27 18:26:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670459789] [2024-06-27 18:26:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670459789] [2024-06-27 18:26:41,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670459789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477109807] [2024-06-27 18:26:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:41,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:41,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:41,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:41,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1195 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:41,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:41,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:41,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:42,513 INFO L124 PetriNetUnfolderBase]: 4751/7657 cut-off events. [2024-06-27 18:26:42,513 INFO L125 PetriNetUnfolderBase]: For 55836/55895 co-relation queries the response was YES. [2024-06-27 18:26:42,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 7657 events. 4751/7657 cut-off events. For 55836/55895 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48094 event pairs, 1381 based on Foata normal form. 15/7421 useless extension candidates. Maximal degree in co-relation 32345. Up to 6434 conditions per place. [2024-06-27 18:26:42,571 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 141 selfloop transitions, 28 changer transitions 0/191 dead transitions. [2024-06-27 18:26:42,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 1725 flow [2024-06-27 18:26:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:26:42,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 18:26:42,573 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1195 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:26:42,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 1725 flow [2024-06-27 18:26:42,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 191 transitions, 1682 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:42,622 INFO L231 Difference]: Finished difference. Result has 115 places, 144 transitions, 1294 flow [2024-06-27 18:26:42,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1294, PETRI_PLACES=115, PETRI_TRANSITIONS=144} [2024-06-27 18:26:42,623 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:26:42,623 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 144 transitions, 1294 flow [2024-06-27 18:26:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:42,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:42,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:26:42,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:42,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash -678659505, now seen corresponding path program 1 times [2024-06-27 18:26:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:42,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664729651] [2024-06-27 18:26:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:42,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:43,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:43,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664729651] [2024-06-27 18:26:43,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664729651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:43,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:43,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:43,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627009114] [2024-06-27 18:26:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:43,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:43,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:43,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 144 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:43,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:43,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:43,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:44,321 INFO L124 PetriNetUnfolderBase]: 5222/8264 cut-off events. [2024-06-27 18:26:44,321 INFO L125 PetriNetUnfolderBase]: For 65476/65488 co-relation queries the response was YES. [2024-06-27 18:26:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36200 conditions, 8264 events. 5222/8264 cut-off events. For 65476/65488 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 51095 event pairs, 1493 based on Foata normal form. 9/8025 useless extension candidates. Maximal degree in co-relation 36148. Up to 6539 conditions per place. [2024-06-27 18:26:44,390 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 139 selfloop transitions, 52 changer transitions 0/199 dead transitions. [2024-06-27 18:26:44,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 199 transitions, 2048 flow [2024-06-27 18:26:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 18:26:44,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501519756838906 [2024-06-27 18:26:44,392 INFO L175 Difference]: Start difference. First operand has 115 places, 144 transitions, 1294 flow. Second operand 7 states and 181 transitions. [2024-06-27 18:26:44,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 199 transitions, 2048 flow [2024-06-27 18:26:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 1972 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:44,447 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1490 flow [2024-06-27 18:26:44,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1490, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-06-27 18:26:44,448 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-06-27 18:26:44,448 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1490 flow [2024-06-27 18:26:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:44,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:44,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:44,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:26:44,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:44,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash -678653925, now seen corresponding path program 2 times [2024-06-27 18:26:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:44,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809942052] [2024-06-27 18:26:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:45,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809942052] [2024-06-27 18:26:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809942052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077229903] [2024-06-27 18:26:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:45,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:45,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:45,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1490 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:45,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:45,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:45,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:46,375 INFO L124 PetriNetUnfolderBase]: 5306/8372 cut-off events. [2024-06-27 18:26:46,376 INFO L125 PetriNetUnfolderBase]: For 77782/77794 co-relation queries the response was YES. [2024-06-27 18:26:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39017 conditions, 8372 events. 5306/8372 cut-off events. For 77782/77794 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 51609 event pairs, 1477 based on Foata normal form. 9/8135 useless extension candidates. Maximal degree in co-relation 38962. Up to 6601 conditions per place. [2024-06-27 18:26:46,461 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 138 selfloop transitions, 53 changer transitions 0/199 dead transitions. [2024-06-27 18:26:46,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 199 transitions, 2168 flow [2024-06-27 18:26:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:26:46,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:26:46,463 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1490 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:26:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 199 transitions, 2168 flow [2024-06-27 18:26:46,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2071 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:46,553 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1569 flow [2024-06-27 18:26:46,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1569, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-06-27 18:26:46,553 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 18:26:46,554 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1569 flow [2024-06-27 18:26:46,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:46,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:46,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:26:46,554 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:46,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash -979627946, now seen corresponding path program 1 times [2024-06-27 18:26:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102731984] [2024-06-27 18:26:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:47,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102731984] [2024-06-27 18:26:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102731984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607510569] [2024-06-27 18:26:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:47,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:47,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:47,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1569 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:47,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:47,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:47,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:48,538 INFO L124 PetriNetUnfolderBase]: 5335/8264 cut-off events. [2024-06-27 18:26:48,538 INFO L125 PetriNetUnfolderBase]: For 84906/84906 co-relation queries the response was YES. [2024-06-27 18:26:48,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39501 conditions, 8264 events. 5335/8264 cut-off events. For 84906/84906 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50245 event pairs, 1771 based on Foata normal form. 3/8098 useless extension candidates. Maximal degree in co-relation 39445. Up to 7357 conditions per place. [2024-06-27 18:26:48,604 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 152 selfloop transitions, 38 changer transitions 0/198 dead transitions. [2024-06-27 18:26:48,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 198 transitions, 2149 flow [2024-06-27 18:26:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:26:48,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:26:48,606 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1569 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:26:48,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 198 transitions, 2149 flow [2024-06-27 18:26:48,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 198 transitions, 2049 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:48,683 INFO L231 Difference]: Finished difference. Result has 126 places, 160 transitions, 1623 flow [2024-06-27 18:26:48,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1623, PETRI_PLACES=126, PETRI_TRANSITIONS=160} [2024-06-27 18:26:48,684 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-27 18:26:48,684 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 160 transitions, 1623 flow [2024-06-27 18:26:48,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:48,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:48,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:48,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:26:48,685 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:48,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1448828057, now seen corresponding path program 3 times [2024-06-27 18:26:48,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145962743] [2024-06-27 18:26:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145962743] [2024-06-27 18:26:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145962743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:49,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:49,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:26:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869400119] [2024-06-27 18:26:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:26:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:26:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:26:49,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:49,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 160 transitions, 1623 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:49,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:49,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:49,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:50,450 INFO L124 PetriNetUnfolderBase]: 5363/8281 cut-off events. [2024-06-27 18:26:50,450 INFO L125 PetriNetUnfolderBase]: For 91783/91795 co-relation queries the response was YES. [2024-06-27 18:26:50,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40382 conditions, 8281 events. 5363/8281 cut-off events. For 91783/91795 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50224 event pairs, 1809 based on Foata normal form. 14/8132 useless extension candidates. Maximal degree in co-relation 40325. Up to 7436 conditions per place. [2024-06-27 18:26:50,514 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 162 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-06-27 18:26:50,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 198 transitions, 2191 flow [2024-06-27 18:26:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:26:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:26:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:26:50,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-27 18:26:50,516 INFO L175 Difference]: Start difference. First operand has 126 places, 160 transitions, 1623 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:26:50,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 198 transitions, 2191 flow [2024-06-27 18:26:50,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 198 transitions, 2089 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:50,600 INFO L231 Difference]: Finished difference. Result has 128 places, 164 transitions, 1652 flow [2024-06-27 18:26:50,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1652, PETRI_PLACES=128, PETRI_TRANSITIONS=164} [2024-06-27 18:26:50,600 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-06-27 18:26:50,600 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 164 transitions, 1652 flow [2024-06-27 18:26:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:50,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:50,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:50,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:26:50,601 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:50,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash 741926670, now seen corresponding path program 1 times [2024-06-27 18:26:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:50,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251906546] [2024-06-27 18:26:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251906546] [2024-06-27 18:26:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251906546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:51,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639734190] [2024-06-27 18:26:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:51,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:51,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 164 transitions, 1652 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:51,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:51,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:51,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:52,288 INFO L124 PetriNetUnfolderBase]: 5354/8146 cut-off events. [2024-06-27 18:26:52,288 INFO L125 PetriNetUnfolderBase]: For 96274/96274 co-relation queries the response was YES. [2024-06-27 18:26:52,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40448 conditions, 8146 events. 5354/8146 cut-off events. For 96274/96274 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 48019 event pairs, 1817 based on Foata normal form. 3/8017 useless extension candidates. Maximal degree in co-relation 40390. Up to 7567 conditions per place. [2024-06-27 18:26:52,348 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 163 selfloop transitions, 17 changer transitions 0/188 dead transitions. [2024-06-27 18:26:52,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 2094 flow [2024-06-27 18:26:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:26:52,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-06-27 18:26:52,350 INFO L175 Difference]: Start difference. First operand has 128 places, 164 transitions, 1652 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:26:52,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 2094 flow [2024-06-27 18:26:52,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 188 transitions, 2011 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:52,440 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1646 flow [2024-06-27 18:26:52,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1646, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2024-06-27 18:26:52,440 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 18:26:52,441 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1646 flow [2024-06-27 18:26:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:52,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:52,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:26:52,441 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:52,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1451185569, now seen corresponding path program 1 times [2024-06-27 18:26:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:52,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362144511] [2024-06-27 18:26:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:53,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:53,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362144511] [2024-06-27 18:26:53,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362144511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:53,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:53,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397492838] [2024-06-27 18:26:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:53,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:53,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:53,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1646 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:53,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:53,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:54,561 INFO L124 PetriNetUnfolderBase]: 5000/7805 cut-off events. [2024-06-27 18:26:54,562 INFO L125 PetriNetUnfolderBase]: For 99899/99977 co-relation queries the response was YES. [2024-06-27 18:26:54,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39509 conditions, 7805 events. 5000/7805 cut-off events. For 99899/99977 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47916 event pairs, 1066 based on Foata normal form. 21/7654 useless extension candidates. Maximal degree in co-relation 39450. Up to 6581 conditions per place. [2024-06-27 18:26:54,616 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 167 selfloop transitions, 31 changer transitions 0/225 dead transitions. [2024-06-27 18:26:54,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 225 transitions, 2364 flow [2024-06-27 18:26:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:54,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:26:54,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 18:26:54,618 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1646 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:26:54,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 225 transitions, 2364 flow [2024-06-27 18:26:54,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 225 transitions, 2313 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:54,689 INFO L231 Difference]: Finished difference. Result has 134 places, 174 transitions, 1785 flow [2024-06-27 18:26:54,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1785, PETRI_PLACES=134, PETRI_TRANSITIONS=174} [2024-06-27 18:26:54,689 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-27 18:26:54,689 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 174 transitions, 1785 flow [2024-06-27 18:26:54,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:54,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:54,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:26:54,690 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:54,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1451246019, now seen corresponding path program 2 times [2024-06-27 18:26:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034307458] [2024-06-27 18:26:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034307458] [2024-06-27 18:26:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034307458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:55,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723434527] [2024-06-27 18:26:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:55,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:55,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:55,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:55,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 174 transitions, 1785 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:55,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:55,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:55,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:56,780 INFO L124 PetriNetUnfolderBase]: 4989/7782 cut-off events. [2024-06-27 18:26:56,781 INFO L125 PetriNetUnfolderBase]: For 106611/106689 co-relation queries the response was YES. [2024-06-27 18:26:56,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40113 conditions, 7782 events. 4989/7782 cut-off events. For 106611/106689 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47672 event pairs, 1333 based on Foata normal form. 21/7633 useless extension candidates. Maximal degree in co-relation 40052. Up to 6693 conditions per place. [2024-06-27 18:26:56,976 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 173 selfloop transitions, 30 changer transitions 0/230 dead transitions. [2024-06-27 18:26:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 230 transitions, 2351 flow [2024-06-27 18:26:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:26:56,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 18:26:56,978 INFO L175 Difference]: Start difference. First operand has 134 places, 174 transitions, 1785 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:26:56,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 230 transitions, 2351 flow [2024-06-27 18:26:57,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 230 transitions, 2242 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:57,107 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 1743 flow [2024-06-27 18:26:57,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2024-06-27 18:26:57,108 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 18:26:57,108 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 1743 flow [2024-06-27 18:26:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:57,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:57,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:57,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:26:57,109 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:57,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1451246143, now seen corresponding path program 1 times [2024-06-27 18:26:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:57,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361801587] [2024-06-27 18:26:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:57,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361801587] [2024-06-27 18:26:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361801587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:57,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:57,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:26:57,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971961943] [2024-06-27 18:26:57,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:57,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:26:57,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:57,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:26:57,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:26:58,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:58,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 1743 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:58,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:58,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:59,437 INFO L124 PetriNetUnfolderBase]: 5579/8258 cut-off events. [2024-06-27 18:26:59,437 INFO L125 PetriNetUnfolderBase]: For 116113/116125 co-relation queries the response was YES. [2024-06-27 18:26:59,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43292 conditions, 8258 events. 5579/8258 cut-off events. For 116113/116125 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 47122 event pairs, 1111 based on Foata normal form. 9/8192 useless extension candidates. Maximal degree in co-relation 43229. Up to 6177 conditions per place. [2024-06-27 18:26:59,516 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 178 selfloop transitions, 73 changer transitions 0/259 dead transitions. [2024-06-27 18:26:59,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 259 transitions, 3036 flow [2024-06-27 18:26:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:26:59,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-27 18:26:59,518 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 1743 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:26:59,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 259 transitions, 3036 flow [2024-06-27 18:26:59,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 259 transitions, 2970 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:59,633 INFO L231 Difference]: Finished difference. Result has 143 places, 191 transitions, 2107 flow [2024-06-27 18:26:59,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2107, PETRI_PLACES=143, PETRI_TRANSITIONS=191} [2024-06-27 18:26:59,634 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-27 18:26:59,634 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 191 transitions, 2107 flow [2024-06-27 18:26:59,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:59,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:59,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:59,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:26:59,635 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:59,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:59,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1564869823, now seen corresponding path program 2 times [2024-06-27 18:26:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:59,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286231130] [2024-06-27 18:26:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:59,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:00,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:00,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286231130] [2024-06-27 18:27:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286231130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:00,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:00,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073301405] [2024-06-27 18:27:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:00,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:00,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:00,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:00,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 191 transitions, 2107 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:00,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:00,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:00,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:02,023 INFO L124 PetriNetUnfolderBase]: 5663/8572 cut-off events. [2024-06-27 18:27:02,023 INFO L125 PetriNetUnfolderBase]: For 135619/135631 co-relation queries the response was YES. [2024-06-27 18:27:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47719 conditions, 8572 events. 5663/8572 cut-off events. For 135619/135631 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 50827 event pairs, 1358 based on Foata normal form. 9/8435 useless extension candidates. Maximal degree in co-relation 47652. Up to 7015 conditions per place. [2024-06-27 18:27:02,109 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 180 selfloop transitions, 58 changer transitions 0/246 dead transitions. [2024-06-27 18:27:02,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 246 transitions, 2936 flow [2024-06-27 18:27:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:27:02,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:27:02,110 INFO L175 Difference]: Start difference. First operand has 143 places, 191 transitions, 2107 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:27:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 246 transitions, 2936 flow [2024-06-27 18:27:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 246 transitions, 2825 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:02,265 INFO L231 Difference]: Finished difference. Result has 149 places, 195 transitions, 2196 flow [2024-06-27 18:27:02,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2196, PETRI_PLACES=149, PETRI_TRANSITIONS=195} [2024-06-27 18:27:02,266 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 96 predicate places. [2024-06-27 18:27:02,266 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 195 transitions, 2196 flow [2024-06-27 18:27:02,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:02,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:02,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:02,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:27:02,267 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:02,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 321097495, now seen corresponding path program 3 times [2024-06-27 18:27:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832627574] [2024-06-27 18:27:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:02,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:03,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:03,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832627574] [2024-06-27 18:27:03,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832627574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:03,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:03,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407080089] [2024-06-27 18:27:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:03,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:03,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:03,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:03,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:03,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:03,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 195 transitions, 2196 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:03,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:03,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:03,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:04,539 INFO L124 PetriNetUnfolderBase]: 5807/8760 cut-off events. [2024-06-27 18:27:04,540 INFO L125 PetriNetUnfolderBase]: For 146279/146291 co-relation queries the response was YES. [2024-06-27 18:27:04,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49774 conditions, 8760 events. 5807/8760 cut-off events. For 146279/146291 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51817 event pairs, 1369 based on Foata normal form. 9/8626 useless extension candidates. Maximal degree in co-relation 49705. Up to 7061 conditions per place. [2024-06-27 18:27:04,607 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 189 selfloop transitions, 68 changer transitions 0/265 dead transitions. [2024-06-27 18:27:04,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 265 transitions, 3203 flow [2024-06-27 18:27:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:27:04,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 18:27:04,609 INFO L175 Difference]: Start difference. First operand has 149 places, 195 transitions, 2196 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:27:04,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 265 transitions, 3203 flow [2024-06-27 18:27:04,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 265 transitions, 3050 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:04,797 INFO L231 Difference]: Finished difference. Result has 153 places, 203 transitions, 2332 flow [2024-06-27 18:27:04,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2332, PETRI_PLACES=153, PETRI_TRANSITIONS=203} [2024-06-27 18:27:04,798 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 18:27:04,798 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 203 transitions, 2332 flow [2024-06-27 18:27:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:04,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:04,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:27:04,799 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:04,799 INFO L85 PathProgramCache]: Analyzing trace with hash 436388665, now seen corresponding path program 4 times [2024-06-27 18:27:04,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:04,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62348243] [2024-06-27 18:27:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:05,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62348243] [2024-06-27 18:27:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62348243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:05,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:05,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936223237] [2024-06-27 18:27:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:05,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:05,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 203 transitions, 2332 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:05,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:05,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:07,136 INFO L124 PetriNetUnfolderBase]: 5959/9002 cut-off events. [2024-06-27 18:27:07,136 INFO L125 PetriNetUnfolderBase]: For 161992/162004 co-relation queries the response was YES. [2024-06-27 18:27:07,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52273 conditions, 9002 events. 5959/9002 cut-off events. For 161992/162004 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 53674 event pairs, 1333 based on Foata normal form. 9/8857 useless extension candidates. Maximal degree in co-relation 52202. Up to 7174 conditions per place. [2024-06-27 18:27:07,231 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 203 selfloop transitions, 70 changer transitions 0/281 dead transitions. [2024-06-27 18:27:07,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 281 transitions, 3510 flow [2024-06-27 18:27:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:07,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:27:07,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 18:27:07,232 INFO L175 Difference]: Start difference. First operand has 153 places, 203 transitions, 2332 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:27:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 281 transitions, 3510 flow [2024-06-27 18:27:07,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 281 transitions, 3384 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:07,489 INFO L231 Difference]: Finished difference. Result has 158 places, 212 transitions, 2534 flow [2024-06-27 18:27:07,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2534, PETRI_PLACES=158, PETRI_TRANSITIONS=212} [2024-06-27 18:27:07,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 18:27:07,490 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 212 transitions, 2534 flow [2024-06-27 18:27:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:07,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:07,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:27:07,491 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:07,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash 436566295, now seen corresponding path program 5 times [2024-06-27 18:27:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752306241] [2024-06-27 18:27:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:07,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752306241] [2024-06-27 18:27:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752306241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451278971] [2024-06-27 18:27:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:08,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 212 transitions, 2534 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:08,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:08,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:08,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:09,803 INFO L124 PetriNetUnfolderBase]: 6043/9124 cut-off events. [2024-06-27 18:27:09,804 INFO L125 PetriNetUnfolderBase]: For 176065/176077 co-relation queries the response was YES. [2024-06-27 18:27:09,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54706 conditions, 9124 events. 6043/9124 cut-off events. For 176065/176077 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 54505 event pairs, 1348 based on Foata normal form. 9/8978 useless extension candidates. Maximal degree in co-relation 54632. Up to 7538 conditions per place. [2024-06-27 18:27:09,905 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 198 selfloop transitions, 60 changer transitions 0/266 dead transitions. [2024-06-27 18:27:09,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 266 transitions, 3386 flow [2024-06-27 18:27:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:27:09,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 18:27:09,908 INFO L175 Difference]: Start difference. First operand has 158 places, 212 transitions, 2534 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:27:09,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 266 transitions, 3386 flow [2024-06-27 18:27:10,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 266 transitions, 3226 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:10,177 INFO L231 Difference]: Finished difference. Result has 161 places, 216 transitions, 2597 flow [2024-06-27 18:27:10,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2597, PETRI_PLACES=161, PETRI_TRANSITIONS=216} [2024-06-27 18:27:10,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-27 18:27:10,178 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 216 transitions, 2597 flow [2024-06-27 18:27:10,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:10,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:10,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:27:10,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:10,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:10,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1569518397, now seen corresponding path program 1 times [2024-06-27 18:27:10,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:10,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649769747] [2024-06-27 18:27:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649769747] [2024-06-27 18:27:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649769747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:11,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147643626] [2024-06-27 18:27:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:11,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:11,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:11,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 216 transitions, 2597 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:11,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:11,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:11,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:12,789 INFO L124 PetriNetUnfolderBase]: 6179/9348 cut-off events. [2024-06-27 18:27:12,789 INFO L125 PetriNetUnfolderBase]: For 190998/191010 co-relation queries the response was YES. [2024-06-27 18:27:12,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56692 conditions, 9348 events. 6179/9348 cut-off events. For 190998/191010 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 56104 event pairs, 1376 based on Foata normal form. 15/9200 useless extension candidates. Maximal degree in co-relation 56616. Up to 7696 conditions per place. [2024-06-27 18:27:12,896 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 205 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-06-27 18:27:12,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 271 transitions, 3511 flow [2024-06-27 18:27:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:27:12,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:27:12,898 INFO L175 Difference]: Start difference. First operand has 161 places, 216 transitions, 2597 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:27:12,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 271 transitions, 3511 flow [2024-06-27 18:27:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 271 transitions, 3342 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:13,166 INFO L231 Difference]: Finished difference. Result has 163 places, 220 transitions, 2641 flow [2024-06-27 18:27:13,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2641, PETRI_PLACES=163, PETRI_TRANSITIONS=220} [2024-06-27 18:27:13,168 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 18:27:13,168 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 220 transitions, 2641 flow [2024-06-27 18:27:13,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:13,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:13,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:27:13,169 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash -32732657, now seen corresponding path program 1 times [2024-06-27 18:27:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:13,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198005047] [2024-06-27 18:27:13,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:13,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:13,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198005047] [2024-06-27 18:27:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198005047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:13,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109282679] [2024-06-27 18:27:13,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:13,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:13,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:13,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 220 transitions, 2641 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:13,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:13,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:13,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:15,310 INFO L124 PetriNetUnfolderBase]: 6196/9379 cut-off events. [2024-06-27 18:27:15,311 INFO L125 PetriNetUnfolderBase]: For 197025/197025 co-relation queries the response was YES. [2024-06-27 18:27:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57726 conditions, 9379 events. 6196/9379 cut-off events. For 197025/197025 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 56452 event pairs, 1576 based on Foata normal form. 1/9208 useless extension candidates. Maximal degree in co-relation 57649. Up to 8741 conditions per place. [2024-06-27 18:27:15,413 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 223 selfloop transitions, 18 changer transitions 0/249 dead transitions. [2024-06-27 18:27:15,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 249 transitions, 3310 flow [2024-06-27 18:27:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:27:15,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-27 18:27:15,417 INFO L175 Difference]: Start difference. First operand has 163 places, 220 transitions, 2641 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:27:15,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 249 transitions, 3310 flow [2024-06-27 18:27:15,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 249 transitions, 3123 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:15,709 INFO L231 Difference]: Finished difference. Result has 163 places, 223 transitions, 2555 flow [2024-06-27 18:27:15,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2555, PETRI_PLACES=163, PETRI_TRANSITIONS=223} [2024-06-27 18:27:15,724 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 18:27:15,725 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 223 transitions, 2555 flow [2024-06-27 18:27:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:15,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:15,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:15,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:27:15,725 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:15,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:15,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1973173181, now seen corresponding path program 2 times [2024-06-27 18:27:15,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327851015] [2024-06-27 18:27:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:16,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327851015] [2024-06-27 18:27:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327851015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:16,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:16,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:16,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730228607] [2024-06-27 18:27:16,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:16,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:16,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:16,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:16,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:16,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 223 transitions, 2555 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:16,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:16,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:16,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:18,768 INFO L124 PetriNetUnfolderBase]: 6274/9568 cut-off events. [2024-06-27 18:27:18,769 INFO L125 PetriNetUnfolderBase]: For 203823/203823 co-relation queries the response was YES. [2024-06-27 18:27:18,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57227 conditions, 9568 events. 6274/9568 cut-off events. For 203823/203823 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 58373 event pairs, 1802 based on Foata normal form. 6/9410 useless extension candidates. Maximal degree in co-relation 57149. Up to 8656 conditions per place. [2024-06-27 18:27:18,927 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 231 selfloop transitions, 40 changer transitions 0/279 dead transitions. [2024-06-27 18:27:18,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 279 transitions, 3455 flow [2024-06-27 18:27:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:27:18,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:27:18,929 INFO L175 Difference]: Start difference. First operand has 163 places, 223 transitions, 2555 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:27:18,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 279 transitions, 3455 flow [2024-06-27 18:27:19,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 279 transitions, 3325 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:19,265 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 2776 flow [2024-06-27 18:27:19,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2776, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-06-27 18:27:19,266 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 18:27:19,266 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 2776 flow [2024-06-27 18:27:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:19,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:19,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:27:19,267 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1708398461, now seen corresponding path program 3 times [2024-06-27 18:27:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566907084] [2024-06-27 18:27:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:20,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566907084] [2024-06-27 18:27:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566907084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:20,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86534566] [2024-06-27 18:27:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:20,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:20,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:20,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 2776 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:20,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:20,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:20,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:22,221 INFO L124 PetriNetUnfolderBase]: 6342/9678 cut-off events. [2024-06-27 18:27:22,221 INFO L125 PetriNetUnfolderBase]: For 221799/221799 co-relation queries the response was YES. [2024-06-27 18:27:22,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59920 conditions, 9678 events. 6342/9678 cut-off events. For 221799/221799 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59139 event pairs, 1809 based on Foata normal form. 6/9517 useless extension candidates. Maximal degree in co-relation 59838. Up to 8693 conditions per place. [2024-06-27 18:27:22,372 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 35 changer transitions 0/286 dead transitions. [2024-06-27 18:27:22,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 286 transitions, 3670 flow [2024-06-27 18:27:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:27:22,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:27:22,375 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 2776 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:27:22,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 286 transitions, 3670 flow [2024-06-27 18:27:22,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 286 transitions, 3549 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:22,805 INFO L231 Difference]: Finished difference. Result has 174 places, 242 transitions, 2823 flow [2024-06-27 18:27:22,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2823, PETRI_PLACES=174, PETRI_TRANSITIONS=242} [2024-06-27 18:27:22,806 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 18:27:22,807 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 242 transitions, 2823 flow [2024-06-27 18:27:22,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:22,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:22,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:27:22,807 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:22,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1973498681, now seen corresponding path program 4 times [2024-06-27 18:27:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212548559] [2024-06-27 18:27:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:23,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212548559] [2024-06-27 18:27:23,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212548559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:23,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:23,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744228976] [2024-06-27 18:27:23,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:23,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:23,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:23,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 242 transitions, 2823 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:23,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:23,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:23,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:25,405 INFO L124 PetriNetUnfolderBase]: 6373/9741 cut-off events. [2024-06-27 18:27:25,406 INFO L125 PetriNetUnfolderBase]: For 231799/231799 co-relation queries the response was YES. [2024-06-27 18:27:25,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60582 conditions, 9741 events. 6373/9741 cut-off events. For 231799/231799 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 59795 event pairs, 1788 based on Foata normal form. 6/9576 useless extension candidates. Maximal degree in co-relation 60499. Up to 8846 conditions per place. [2024-06-27 18:27:25,504 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 243 selfloop transitions, 36 changer transitions 0/287 dead transitions. [2024-06-27 18:27:25,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 287 transitions, 3657 flow [2024-06-27 18:27:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:25,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:27:25,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-27 18:27:25,506 INFO L175 Difference]: Start difference. First operand has 174 places, 242 transitions, 2823 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:27:25,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 287 transitions, 3657 flow [2024-06-27 18:27:25,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 287 transitions, 3511 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:25,845 INFO L231 Difference]: Finished difference. Result has 177 places, 249 transitions, 2892 flow [2024-06-27 18:27:25,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2892, PETRI_PLACES=177, PETRI_TRANSITIONS=249} [2024-06-27 18:27:25,846 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-27 18:27:25,846 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 249 transitions, 2892 flow [2024-06-27 18:27:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:27:25,847 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:25,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1963998297, now seen corresponding path program 6 times [2024-06-27 18:27:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98549214] [2024-06-27 18:27:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98549214] [2024-06-27 18:27:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98549214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:26,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:26,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:26,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109849191] [2024-06-27 18:27:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:26,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:26,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:26,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 249 transitions, 2892 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:26,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:26,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:28,543 INFO L124 PetriNetUnfolderBase]: 6468/9857 cut-off events. [2024-06-27 18:27:28,543 INFO L125 PetriNetUnfolderBase]: For 244241/244256 co-relation queries the response was YES. [2024-06-27 18:27:28,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61869 conditions, 9857 events. 6468/9857 cut-off events. For 244241/244256 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 60439 event pairs, 1767 based on Foata normal form. 19/9709 useless extension candidates. Maximal degree in co-relation 61784. Up to 8713 conditions per place. [2024-06-27 18:27:28,630 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 241 selfloop transitions, 60 changer transitions 0/309 dead transitions. [2024-06-27 18:27:28,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 309 transitions, 4055 flow [2024-06-27 18:27:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:27:28,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 18:27:28,632 INFO L175 Difference]: Start difference. First operand has 177 places, 249 transitions, 2892 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:27:28,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 309 transitions, 4055 flow [2024-06-27 18:27:28,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 309 transitions, 3896 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:28,937 INFO L231 Difference]: Finished difference. Result has 181 places, 260 transitions, 3116 flow [2024-06-27 18:27:28,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3116, PETRI_PLACES=181, PETRI_TRANSITIONS=260} [2024-06-27 18:27:28,937 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 128 predicate places. [2024-06-27 18:27:28,938 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 260 transitions, 3116 flow [2024-06-27 18:27:28,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:28,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:28,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:27:28,938 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:28,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash -541196061, now seen corresponding path program 1 times [2024-06-27 18:27:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882887907] [2024-06-27 18:27:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:28,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:29,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:29,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882887907] [2024-06-27 18:27:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882887907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:29,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:29,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595532504] [2024-06-27 18:27:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:29,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:29,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 260 transitions, 3116 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:29,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:29,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:31,291 INFO L124 PetriNetUnfolderBase]: 6469/9878 cut-off events. [2024-06-27 18:27:31,291 INFO L125 PetriNetUnfolderBase]: For 247604/247616 co-relation queries the response was YES. [2024-06-27 18:27:31,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62168 conditions, 9878 events. 6469/9878 cut-off events. For 247604/247616 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 60705 event pairs, 1821 based on Foata normal form. 11/9717 useless extension candidates. Maximal degree in co-relation 62081. Up to 8904 conditions per place. [2024-06-27 18:27:31,404 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 247 selfloop transitions, 43 changer transitions 0/298 dead transitions. [2024-06-27 18:27:31,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 298 transitions, 3961 flow [2024-06-27 18:27:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:27:31,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:27:31,406 INFO L175 Difference]: Start difference. First operand has 181 places, 260 transitions, 3116 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:27:31,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 298 transitions, 3961 flow [2024-06-27 18:27:31,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 298 transitions, 3703 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:31,860 INFO L231 Difference]: Finished difference. Result has 184 places, 264 transitions, 3059 flow [2024-06-27 18:27:31,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3059, PETRI_PLACES=184, PETRI_TRANSITIONS=264} [2024-06-27 18:27:31,861 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-27 18:27:31,861 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 264 transitions, 3059 flow [2024-06-27 18:27:31,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:31,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:31,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:31,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:27:31,861 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:31,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1524876913, now seen corresponding path program 2 times [2024-06-27 18:27:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:31,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068227085] [2024-06-27 18:27:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:32,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068227085] [2024-06-27 18:27:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068227085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:32,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720775938] [2024-06-27 18:27:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:32,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:32,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 264 transitions, 3059 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:34,623 INFO L124 PetriNetUnfolderBase]: 6466/9884 cut-off events. [2024-06-27 18:27:34,623 INFO L125 PetriNetUnfolderBase]: For 244622/244622 co-relation queries the response was YES. [2024-06-27 18:27:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61641 conditions, 9884 events. 6466/9884 cut-off events. For 244622/244622 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 60793 event pairs, 1866 based on Foata normal form. 1/9710 useless extension candidates. Maximal degree in co-relation 61552. Up to 9161 conditions per place. [2024-06-27 18:27:34,826 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 260 selfloop transitions, 13 changer transitions 0/281 dead transitions. [2024-06-27 18:27:34,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 281 transitions, 3655 flow [2024-06-27 18:27:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 18:27:34,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450354609929078 [2024-06-27 18:27:34,827 INFO L175 Difference]: Start difference. First operand has 184 places, 264 transitions, 3059 flow. Second operand 6 states and 127 transitions. [2024-06-27 18:27:34,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 281 transitions, 3655 flow [2024-06-27 18:27:35,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 281 transitions, 3565 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:35,336 INFO L231 Difference]: Finished difference. Result has 185 places, 264 transitions, 3001 flow [2024-06-27 18:27:35,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3001, PETRI_PLACES=185, PETRI_TRANSITIONS=264} [2024-06-27 18:27:35,337 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-06-27 18:27:35,338 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 264 transitions, 3001 flow [2024-06-27 18:27:35,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:35,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:35,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:35,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:27:35,338 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:35,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2135118556, now seen corresponding path program 1 times [2024-06-27 18:27:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:35,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584903167] [2024-06-27 18:27:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:36,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:36,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584903167] [2024-06-27 18:27:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584903167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:36,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550315323] [2024-06-27 18:27:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:36,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:36,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:36,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:36,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:36,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 264 transitions, 3001 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:36,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:36,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:38,070 INFO L124 PetriNetUnfolderBase]: 6477/9931 cut-off events. [2024-06-27 18:27:38,071 INFO L125 PetriNetUnfolderBase]: For 250661/250661 co-relation queries the response was YES. [2024-06-27 18:27:38,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61698 conditions, 9931 events. 6477/9931 cut-off events. For 250661/250661 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 61401 event pairs, 1846 based on Foata normal form. 3/9749 useless extension candidates. Maximal degree in co-relation 61608. Up to 9047 conditions per place. [2024-06-27 18:27:38,276 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 246 selfloop transitions, 41 changer transitions 0/295 dead transitions. [2024-06-27 18:27:38,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 295 transitions, 3815 flow [2024-06-27 18:27:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:27:38,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:27:38,278 INFO L175 Difference]: Start difference. First operand has 185 places, 264 transitions, 3001 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:27:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 295 transitions, 3815 flow [2024-06-27 18:27:38,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 295 transitions, 3770 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:38,788 INFO L231 Difference]: Finished difference. Result has 186 places, 270 transitions, 3158 flow [2024-06-27 18:27:38,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3158, PETRI_PLACES=186, PETRI_TRANSITIONS=270} [2024-06-27 18:27:38,789 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-06-27 18:27:38,789 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 270 transitions, 3158 flow [2024-06-27 18:27:38,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:38,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:38,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:38,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:27:38,790 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:38,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2109851940, now seen corresponding path program 2 times [2024-06-27 18:27:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650306133] [2024-06-27 18:27:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650306133] [2024-06-27 18:27:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650306133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56152864] [2024-06-27 18:27:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:39,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 270 transitions, 3158 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:39,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:39,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:39,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:41,243 INFO L124 PetriNetUnfolderBase]: 6443/9875 cut-off events. [2024-06-27 18:27:41,243 INFO L125 PetriNetUnfolderBase]: For 257745/257757 co-relation queries the response was YES. [2024-06-27 18:27:41,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61646 conditions, 9875 events. 6443/9875 cut-off events. For 257745/257757 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 61003 event pairs, 1850 based on Foata normal form. 4/9696 useless extension candidates. Maximal degree in co-relation 61556. Up to 8998 conditions per place. [2024-06-27 18:27:41,414 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 240 selfloop transitions, 43 changer transitions 0/291 dead transitions. [2024-06-27 18:27:41,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 291 transitions, 3785 flow [2024-06-27 18:27:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:27:41,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:27:41,417 INFO L175 Difference]: Start difference. First operand has 186 places, 270 transitions, 3158 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:27:41,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 291 transitions, 3785 flow [2024-06-27 18:27:41,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 291 transitions, 3713 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:41,884 INFO L231 Difference]: Finished difference. Result has 189 places, 270 transitions, 3182 flow [2024-06-27 18:27:41,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3182, PETRI_PLACES=189, PETRI_TRANSITIONS=270} [2024-06-27 18:27:41,885 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-06-27 18:27:41,885 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 270 transitions, 3182 flow [2024-06-27 18:27:41,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:41,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:41,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:27:41,886 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:41,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1275519794, now seen corresponding path program 1 times [2024-06-27 18:27:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307443529] [2024-06-27 18:27:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:41,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307443529] [2024-06-27 18:27:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307443529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:42,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183723703] [2024-06-27 18:27:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:42,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:42,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:42,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 270 transitions, 3182 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:42,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:42,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:42,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:45,669 INFO L124 PetriNetUnfolderBase]: 7353/11272 cut-off events. [2024-06-27 18:27:45,670 INFO L125 PetriNetUnfolderBase]: For 340750/340762 co-relation queries the response was YES. [2024-06-27 18:27:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72739 conditions, 11272 events. 7353/11272 cut-off events. For 340750/340762 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 70565 event pairs, 1144 based on Foata normal form. 27/11086 useless extension candidates. Maximal degree in co-relation 72648. Up to 6551 conditions per place. [2024-06-27 18:27:45,819 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 271 selfloop transitions, 88 changer transitions 0/367 dead transitions. [2024-06-27 18:27:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 367 transitions, 4873 flow [2024-06-27 18:27:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:27:45,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-27 18:27:45,821 INFO L175 Difference]: Start difference. First operand has 189 places, 270 transitions, 3182 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:27:45,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 367 transitions, 4873 flow [2024-06-27 18:27:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 367 transitions, 4720 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:46,350 INFO L231 Difference]: Finished difference. Result has 194 places, 283 transitions, 3517 flow [2024-06-27 18:27:46,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3517, PETRI_PLACES=194, PETRI_TRANSITIONS=283} [2024-06-27 18:27:46,350 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-06-27 18:27:46,351 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 283 transitions, 3517 flow [2024-06-27 18:27:46,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:46,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:46,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:27:46,351 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash -136561022, now seen corresponding path program 2 times [2024-06-27 18:27:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527736599] [2024-06-27 18:27:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:47,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:47,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527736599] [2024-06-27 18:27:47,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527736599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:47,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:47,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:47,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187047501] [2024-06-27 18:27:47,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:47,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:47,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:47,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:47,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 283 transitions, 3517 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:47,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:47,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:47,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:49,907 INFO L124 PetriNetUnfolderBase]: 8161/12191 cut-off events. [2024-06-27 18:27:49,907 INFO L125 PetriNetUnfolderBase]: For 440111/440123 co-relation queries the response was YES. [2024-06-27 18:27:50,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86652 conditions, 12191 events. 8161/12191 cut-off events. For 440111/440123 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 75343 event pairs, 1578 based on Foata normal form. 27/12105 useless extension candidates. Maximal degree in co-relation 86558. Up to 8447 conditions per place. [2024-06-27 18:27:50,131 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 239 selfloop transitions, 127 changer transitions 0/374 dead transitions. [2024-06-27 18:27:50,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 374 transitions, 5384 flow [2024-06-27 18:27:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:27:50,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 18:27:50,136 INFO L175 Difference]: Start difference. First operand has 194 places, 283 transitions, 3517 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:27:50,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 374 transitions, 5384 flow [2024-06-27 18:27:51,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 374 transitions, 5248 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:51,456 INFO L231 Difference]: Finished difference. Result has 201 places, 290 transitions, 3845 flow [2024-06-27 18:27:51,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3845, PETRI_PLACES=201, PETRI_TRANSITIONS=290} [2024-06-27 18:27:51,457 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-27 18:27:51,457 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 290 transitions, 3845 flow [2024-06-27 18:27:51,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:51,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:51,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:51,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:27:51,458 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:51,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1277397464, now seen corresponding path program 3 times [2024-06-27 18:27:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:51,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086896357] [2024-06-27 18:27:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:51,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086896357] [2024-06-27 18:27:52,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086896357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:52,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:52,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819926007] [2024-06-27 18:27:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:52,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:52,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 290 transitions, 3845 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:52,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:52,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:54,783 INFO L124 PetriNetUnfolderBase]: 8302/12402 cut-off events. [2024-06-27 18:27:54,784 INFO L125 PetriNetUnfolderBase]: For 458084/458096 co-relation queries the response was YES. [2024-06-27 18:27:54,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88962 conditions, 12402 events. 8302/12402 cut-off events. For 458084/458096 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 76987 event pairs, 1607 based on Foata normal form. 33/12322 useless extension candidates. Maximal degree in co-relation 88865. Up to 9343 conditions per place. [2024-06-27 18:27:54,926 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 236 selfloop transitions, 126 changer transitions 0/370 dead transitions. [2024-06-27 18:27:54,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 370 transitions, 5431 flow [2024-06-27 18:27:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:27:54,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-27 18:27:54,927 INFO L175 Difference]: Start difference. First operand has 201 places, 290 transitions, 3845 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:27:54,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 370 transitions, 5431 flow [2024-06-27 18:27:55,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 370 transitions, 5193 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:55,654 INFO L231 Difference]: Finished difference. Result has 205 places, 293 transitions, 3983 flow [2024-06-27 18:27:55,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3983, PETRI_PLACES=205, PETRI_TRANSITIONS=293} [2024-06-27 18:27:55,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-27 18:27:55,655 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 293 transitions, 3983 flow [2024-06-27 18:27:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:55,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:55,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:55,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:27:55,656 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:55,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1364233424, now seen corresponding path program 4 times [2024-06-27 18:27:55,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:55,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464703148] [2024-06-27 18:27:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:55,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464703148] [2024-06-27 18:27:56,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464703148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:56,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:56,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849552663] [2024-06-27 18:27:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:56,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:56,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 293 transitions, 3983 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:56,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:56,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:56,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:58,915 INFO L124 PetriNetUnfolderBase]: 8610/13218 cut-off events. [2024-06-27 18:27:58,916 INFO L125 PetriNetUnfolderBase]: For 483637/483649 co-relation queries the response was YES. [2024-06-27 18:27:59,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93185 conditions, 13218 events. 8610/13218 cut-off events. For 483637/483649 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 86405 event pairs, 2092 based on Foata normal form. 33/13019 useless extension candidates. Maximal degree in co-relation 93086. Up to 10831 conditions per place. [2024-06-27 18:27:59,121 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 283 selfloop transitions, 67 changer transitions 0/358 dead transitions. [2024-06-27 18:27:59,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 358 transitions, 5152 flow [2024-06-27 18:27:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:27:59,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-27 18:27:59,123 INFO L175 Difference]: Start difference. First operand has 205 places, 293 transitions, 3983 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:27:59,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 358 transitions, 5152 flow [2024-06-27 18:28:00,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 358 transitions, 4837 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:00,036 INFO L231 Difference]: Finished difference. Result has 207 places, 295 transitions, 3901 flow [2024-06-27 18:28:00,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3901, PETRI_PLACES=207, PETRI_TRANSITIONS=295} [2024-06-27 18:28:00,037 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-27 18:28:00,037 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 295 transitions, 3901 flow [2024-06-27 18:28:00,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:00,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:00,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:28:00,038 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:00,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:00,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2125650804, now seen corresponding path program 5 times [2024-06-27 18:28:00,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:00,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749510341] [2024-06-27 18:28:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749510341] [2024-06-27 18:28:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749510341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:00,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184391403] [2024-06-27 18:28:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:01,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 295 transitions, 3901 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:01,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:03,555 INFO L124 PetriNetUnfolderBase]: 9090/13526 cut-off events. [2024-06-27 18:28:03,556 INFO L125 PetriNetUnfolderBase]: For 506501/506513 co-relation queries the response was YES. [2024-06-27 18:28:03,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97087 conditions, 13526 events. 9090/13526 cut-off events. For 506501/506513 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 84654 event pairs, 1813 based on Foata normal form. 33/13462 useless extension candidates. Maximal degree in co-relation 96987. Up to 11082 conditions per place. [2024-06-27 18:28:03,742 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 267 selfloop transitions, 112 changer transitions 0/387 dead transitions. [2024-06-27 18:28:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 387 transitions, 5825 flow [2024-06-27 18:28:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:28:03,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 18:28:03,744 INFO L175 Difference]: Start difference. First operand has 207 places, 295 transitions, 3901 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:28:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 387 transitions, 5825 flow [2024-06-27 18:28:05,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 387 transitions, 5639 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:05,526 INFO L231 Difference]: Finished difference. Result has 213 places, 312 transitions, 4488 flow [2024-06-27 18:28:05,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4488, PETRI_PLACES=213, PETRI_TRANSITIONS=312} [2024-06-27 18:28:05,533 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-27 18:28:05,534 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 312 transitions, 4488 flow [2024-06-27 18:28:05,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:05,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:05,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:28:05,534 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:05,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2125647084, now seen corresponding path program 6 times [2024-06-27 18:28:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328654304] [2024-06-27 18:28:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328654304] [2024-06-27 18:28:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328654304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375239157] [2024-06-27 18:28:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:06,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:06,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 312 transitions, 4488 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:06,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:06,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:10,233 INFO L124 PetriNetUnfolderBase]: 9830/14614 cut-off events. [2024-06-27 18:28:10,234 INFO L125 PetriNetUnfolderBase]: For 584512/584524 co-relation queries the response was YES. [2024-06-27 18:28:10,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108008 conditions, 14614 events. 9830/14614 cut-off events. For 584512/584524 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 92825 event pairs, 1916 based on Foata normal form. 27/14553 useless extension candidates. Maximal degree in co-relation 107903. Up to 10896 conditions per place. [2024-06-27 18:28:10,552 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 279 selfloop transitions, 114 changer transitions 0/401 dead transitions. [2024-06-27 18:28:10,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 401 transitions, 6465 flow [2024-06-27 18:28:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:28:10,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-27 18:28:10,553 INFO L175 Difference]: Start difference. First operand has 213 places, 312 transitions, 4488 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:28:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 401 transitions, 6465 flow [2024-06-27 18:28:11,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 401 transitions, 6148 flow, removed 113 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:11,916 INFO L231 Difference]: Finished difference. Result has 220 places, 319 transitions, 4662 flow [2024-06-27 18:28:11,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4662, PETRI_PLACES=220, PETRI_TRANSITIONS=319} [2024-06-27 18:28:11,917 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-06-27 18:28:11,917 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 319 transitions, 4662 flow [2024-06-27 18:28:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:11,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:28:11,918 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:11,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1015009828, now seen corresponding path program 1 times [2024-06-27 18:28:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:11,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136338682] [2024-06-27 18:28:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:11,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136338682] [2024-06-27 18:28:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136338682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:28:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65317538] [2024-06-27 18:28:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:28:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:28:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:28:12,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:12,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 319 transitions, 4662 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:12,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:12,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:12,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:15,771 INFO L124 PetriNetUnfolderBase]: 9898/15302 cut-off events. [2024-06-27 18:28:15,771 INFO L125 PetriNetUnfolderBase]: For 553484/553496 co-relation queries the response was YES. [2024-06-27 18:28:15,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108885 conditions, 15302 events. 9898/15302 cut-off events. For 553484/553496 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 103836 event pairs, 2634 based on Foata normal form. 7/15028 useless extension candidates. Maximal degree in co-relation 108777. Up to 13341 conditions per place. [2024-06-27 18:28:16,000 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 289 selfloop transitions, 68 changer transitions 0/365 dead transitions. [2024-06-27 18:28:16,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 365 transitions, 5792 flow [2024-06-27 18:28:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:28:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:28:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:28:16,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:28:16,001 INFO L175 Difference]: Start difference. First operand has 220 places, 319 transitions, 4662 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:28:16,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 365 transitions, 5792 flow [2024-06-27 18:28:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 365 transitions, 5537 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:17,404 INFO L231 Difference]: Finished difference. Result has 222 places, 324 transitions, 4664 flow [2024-06-27 18:28:17,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4664, PETRI_PLACES=222, PETRI_TRANSITIONS=324} [2024-06-27 18:28:17,405 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-06-27 18:28:17,405 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 324 transitions, 4664 flow [2024-06-27 18:28:17,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:28:17,405 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:17,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 643144528, now seen corresponding path program 7 times [2024-06-27 18:28:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670365555] [2024-06-27 18:28:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:18,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670365555] [2024-06-27 18:28:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670365555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685079539] [2024-06-27 18:28:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:18,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:18,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 324 transitions, 4664 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:18,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:18,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,001 INFO L124 PetriNetUnfolderBase]: 10414/16026 cut-off events. [2024-06-27 18:28:22,001 INFO L125 PetriNetUnfolderBase]: For 609973/609985 co-relation queries the response was YES. [2024-06-27 18:28:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115258 conditions, 16026 events. 10414/16026 cut-off events. For 609973/609985 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 108874 event pairs, 2334 based on Foata normal form. 27/15793 useless extension candidates. Maximal degree in co-relation 115148. Up to 12437 conditions per place. [2024-06-27 18:28:22,317 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 313 selfloop transitions, 85 changer transitions 0/406 dead transitions. [2024-06-27 18:28:22,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 406 transitions, 6387 flow [2024-06-27 18:28:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 18:28:22,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-06-27 18:28:22,320 INFO L175 Difference]: Start difference. First operand has 222 places, 324 transitions, 4664 flow. Second operand 9 states and 241 transitions. [2024-06-27 18:28:22,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 406 transitions, 6387 flow [2024-06-27 18:28:23,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 406 transitions, 6260 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:23,976 INFO L231 Difference]: Finished difference. Result has 228 places, 328 transitions, 4899 flow [2024-06-27 18:28:23,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4899, PETRI_PLACES=228, PETRI_TRANSITIONS=328} [2024-06-27 18:28:23,978 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-27 18:28:23,992 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 328 transitions, 4899 flow [2024-06-27 18:28:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:23,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:23,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:28:23,993 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:23,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1404709778, now seen corresponding path program 8 times [2024-06-27 18:28:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796670916] [2024-06-27 18:28:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796670916] [2024-06-27 18:28:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796670916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:25,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656308488] [2024-06-27 18:28:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:25,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:25,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:25,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:25,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 328 transitions, 4899 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:25,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:25,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:29,214 INFO L124 PetriNetUnfolderBase]: 10898/16250 cut-off events. [2024-06-27 18:28:29,215 INFO L125 PetriNetUnfolderBase]: For 700887/700899 co-relation queries the response was YES. [2024-06-27 18:28:29,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123368 conditions, 16250 events. 10898/16250 cut-off events. For 700887/700899 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 105726 event pairs, 2229 based on Foata normal form. 33/16186 useless extension candidates. Maximal degree in co-relation 123256. Up to 13473 conditions per place. [2024-06-27 18:28:29,437 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 272 selfloop transitions, 141 changer transitions 0/421 dead transitions. [2024-06-27 18:28:29,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 421 transitions, 6929 flow [2024-06-27 18:28:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:28:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 18:28:29,459 INFO L175 Difference]: Start difference. First operand has 228 places, 328 transitions, 4899 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:28:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 421 transitions, 6929 flow [2024-06-27 18:28:31,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 421 transitions, 6714 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:31,583 INFO L231 Difference]: Finished difference. Result has 236 places, 344 transitions, 5568 flow [2024-06-27 18:28:31,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4691, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5568, PETRI_PLACES=236, PETRI_TRANSITIONS=344} [2024-06-27 18:28:31,584 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-27 18:28:31,584 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 344 transitions, 5568 flow [2024-06-27 18:28:31,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:31,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:28:31,585 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:31,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash 648862540, now seen corresponding path program 1 times [2024-06-27 18:28:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:31,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047974769] [2024-06-27 18:28:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:32,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:32,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047974769] [2024-06-27 18:28:32,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047974769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:32,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:32,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:32,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081039499] [2024-06-27 18:28:32,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:32,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:32,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:32,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:32,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:32,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 344 transitions, 5568 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:32,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:32,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:32,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:36,461 INFO L124 PetriNetUnfolderBase]: 10966/17020 cut-off events. [2024-06-27 18:28:36,461 INFO L125 PetriNetUnfolderBase]: For 712051/712063 co-relation queries the response was YES. [2024-06-27 18:28:36,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127252 conditions, 17020 events. 10966/17020 cut-off events. For 712051/712063 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 118395 event pairs, 2948 based on Foata normal form. 9/16716 useless extension candidates. Maximal degree in co-relation 127134. Up to 14895 conditions per place. [2024-06-27 18:28:36,753 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 322 selfloop transitions, 66 changer transitions 0/396 dead transitions. [2024-06-27 18:28:36,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 396 transitions, 6716 flow [2024-06-27 18:28:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:28:36,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 18:28:36,755 INFO L175 Difference]: Start difference. First operand has 236 places, 344 transitions, 5568 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:28:36,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 396 transitions, 6716 flow [2024-06-27 18:28:38,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 396 transitions, 6239 flow, removed 112 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:38,839 INFO L231 Difference]: Finished difference. Result has 239 places, 347 transitions, 5351 flow [2024-06-27 18:28:38,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5091, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5351, PETRI_PLACES=239, PETRI_TRANSITIONS=347} [2024-06-27 18:28:38,840 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-27 18:28:38,840 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 347 transitions, 5351 flow [2024-06-27 18:28:38,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:38,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:38,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:28:38,841 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:28:38,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash -912254320, now seen corresponding path program 2 times [2024-06-27 18:28:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952955708] [2024-06-27 18:28:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:39,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952955708] [2024-06-27 18:28:39,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952955708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:39,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867455008] [2024-06-27 18:28:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:39,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:39,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:39,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:39,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 347 transitions, 5351 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:39,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:39,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:39,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:43,563 INFO L124 PetriNetUnfolderBase]: 11034/17122 cut-off events. [2024-06-27 18:28:43,564 INFO L125 PetriNetUnfolderBase]: For 683673/683685 co-relation queries the response was YES. [2024-06-27 18:28:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123419 conditions, 17122 events. 11034/17122 cut-off events. For 683673/683685 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 119179 event pairs, 2933 based on Foata normal form. 9/16814 useless extension candidates. Maximal degree in co-relation 123301. Up to 14995 conditions per place. [2024-06-27 18:28:43,855 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 325 selfloop transitions, 70 changer transitions 0/403 dead transitions. [2024-06-27 18:28:43,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 403 transitions, 6625 flow [2024-06-27 18:28:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:28:43,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 18:28:43,857 INFO L175 Difference]: Start difference. First operand has 239 places, 347 transitions, 5351 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:28:43,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 403 transitions, 6625 flow