./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix037_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/mix037_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix037_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:25:38,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:25:38,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:25:38,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:25:38,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:25:38,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:25:38,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:25:38,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:25:38,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:25:38,278 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:25:38,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:25:38,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:25:38,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:25:38,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:25:38,280 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:25:38,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:25:38,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:25:38,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:25:38,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:25:38,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:25:38,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:25:38,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:25:38,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:25:38,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:25:38,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:25:38,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:25:38,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:25:38,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:25:38,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:25:38,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:25:38,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:25:38,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:25:38,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:25:38,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:25:38,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:25:38,287 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:25:38,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:25:38,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:25:38,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:25:38,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:25:38,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:25:38,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:25:38,491 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:25:38,491 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:25:38,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix037_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 20:25:38,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:25:38,683 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:25:38,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:25:39,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:25:39,864 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:25:39,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:25:39,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032bce42c/394a4a0e424b49e581071f53c1e3349a/FLAGabe878de5 [2024-06-27 20:25:39,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032bce42c/394a4a0e424b49e581071f53c1e3349a [2024-06-27 20:25:39,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:25:39,895 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:25:39,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:25:39,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:25:39,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:25:39,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:25:38" (1/2) ... [2024-06-27 20:25:39,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13dbc01 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:25:39, skipping insertion in model container [2024-06-27 20:25:39,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:25:38" (1/2) ... [2024-06-27 20:25:39,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b42ba04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:25:39, skipping insertion in model container [2024-06-27 20:25:39,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:25:39" (2/2) ... [2024-06-27 20:25:39,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13dbc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:39, skipping insertion in model container [2024-06-27 20:25:39,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:25:39" (2/2) ... [2024-06-27 20:25:39,904 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:25:40,015 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:25:40,016 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 20:25:40,017 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 20:25:40,017 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 20:25:40,017 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || b$flush_delayed == (_Bool)0)) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1)) [2024-06-27 20:25:40,017 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:25:40,017 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 20:25:40,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:25:40,361 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:25:40,395 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:25:40,558 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:25:40,594 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:25:40,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40 WrapperNode [2024-06-27 20:25:40,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:25:40,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:25:40,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:25:40,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:25:40,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,640 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 140 [2024-06-27 20:25:40,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:25:40,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:25:40,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:25:40,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:25:40,649 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,653 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,666 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 20:25:40,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:25:40,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:25:40,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:25:40,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:25:40,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (1/1) ... [2024-06-27 20:25:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:25:40,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:25:40,703 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 20:25:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:25:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:25:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:25:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:25:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:25:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:25:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:25:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:25:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:25:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:25:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:25:40,734 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 20:25:40,727 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 20:25:40,840 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:25:40,842 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:25:41,207 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:25:41,207 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:25:41,394 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:25:41,394 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:25:41,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:25:41 BoogieIcfgContainer [2024-06-27 20:25:41,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:25:41,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:25:41,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:25:41,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:25:41,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:25:38" (1/4) ... [2024-06-27 20:25:41,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c28ff78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:25:41, skipping insertion in model container [2024-06-27 20:25:41,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:25:39" (2/4) ... [2024-06-27 20:25:41,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c28ff78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:25:41, skipping insertion in model container [2024-06-27 20:25:41,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:25:40" (3/4) ... [2024-06-27 20:25:41,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c28ff78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:25:41, skipping insertion in model container [2024-06-27 20:25:41,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:25:41" (4/4) ... [2024-06-27 20:25:41,403 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 20:25:41,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:25:41,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:25:41,418 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:25:41,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:25:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 20:25:41,522 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-27 20:25:41,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:25:41,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:25:41,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-27 20:25:41,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-27 20:25:41,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:25:41,546 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;@7510aa0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:25:41,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:25:41,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:25:41,551 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:25:41,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:25:41,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:41,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:25:41,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:41,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 407834173, now seen corresponding path program 1 times [2024-06-27 20:25:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:41,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874019028] [2024-06-27 20:25:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:42,583 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 20:25:42,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874019028] [2024-06-27 20:25:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874019028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:42,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:25:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054179475] [2024-06-27 20:25:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:25:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:25:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:25:42,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 20:25:42,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 20:25:42,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:42,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 20:25:42,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:44,298 INFO L124 PetriNetUnfolderBase]: 10982/15338 cut-off events. [2024-06-27 20:25:44,298 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 20:25:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30591 conditions, 15338 events. 10982/15338 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 84983 event pairs, 8614 based on Foata normal form. 1/15003 useless extension candidates. Maximal degree in co-relation 30578. Up to 14862 conditions per place. [2024-06-27 20:25:44,367 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 20:25:44,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 233 flow [2024-06-27 20:25:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:25:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:25:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 20:25:44,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2024-06-27 20:25:44,378 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 98 transitions. [2024-06-27 20:25:44,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 233 flow [2024-06-27 20:25:44,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:25:44,382 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-27 20:25:44,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, 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=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 20:25:44,385 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-27 20:25:44,385 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-27 20:25:44,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 20:25:44,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:44,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:44,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:25:44,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:44,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:44,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1086673948, now seen corresponding path program 1 times [2024-06-27 20:25:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157140183] [2024-06-27 20:25:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:44,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:44,996 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 20:25:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:44,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157140183] [2024-06-27 20:25:44,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157140183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:44,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:25:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391394207] [2024-06-27 20:25:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:44,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:25:44,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:25:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:25:45,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 20:25:45,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:45,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:45,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 20:25:45,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:46,460 INFO L124 PetriNetUnfolderBase]: 10972/15332 cut-off events. [2024-06-27 20:25:46,461 INFO L125 PetriNetUnfolderBase]: For 2791/2791 co-relation queries the response was YES. [2024-06-27 20:25:46,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 15332 events. 10972/15332 cut-off events. For 2791/2791 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 84879 event pairs, 7834 based on Foata normal form. 4/15183 useless extension candidates. Maximal degree in co-relation 34419. Up to 14827 conditions per place. [2024-06-27 20:25:46,522 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 54 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 20:25:46,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 325 flow [2024-06-27 20:25:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:25:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:25:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 20:25:46,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990566037735849 [2024-06-27 20:25:46,524 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 127 transitions. [2024-06-27 20:25:46,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 325 flow [2024-06-27 20:25:46,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:25:46,526 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-27 20:25:46,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 20:25:46,527 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-27 20:25:46,527 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-27 20:25:46,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:46,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:46,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:46,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:25:46,528 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:46,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash -672844118, now seen corresponding path program 1 times [2024-06-27 20:25:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953970123] [2024-06-27 20:25:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:47,171 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 20:25:47,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953970123] [2024-06-27 20:25:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953970123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:47,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:47,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:25:47,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777774468] [2024-06-27 20:25:47,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:47,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:25:47,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:25:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:25:47,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 20:25:47,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 20:25:47,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:47,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 20:25:47,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:48,580 INFO L124 PetriNetUnfolderBase]: 11080/15544 cut-off events. [2024-06-27 20:25:48,580 INFO L125 PetriNetUnfolderBase]: For 8256/8256 co-relation queries the response was YES. [2024-06-27 20:25:48,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38738 conditions, 15544 events. 11080/15544 cut-off events. For 8256/8256 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 87035 event pairs, 6374 based on Foata normal form. 10/15409 useless extension candidates. Maximal degree in co-relation 38724. Up to 14800 conditions per place. [2024-06-27 20:25:48,645 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 74 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-27 20:25:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 549 flow [2024-06-27 20:25:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:25:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:25:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-27 20:25:48,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339622641509434 [2024-06-27 20:25:48,647 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 168 transitions. [2024-06-27 20:25:48,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 549 flow [2024-06-27 20:25:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 530 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:25:48,651 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 314 flow [2024-06-27 20:25:48,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-27 20:25:48,651 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-27 20:25:48,652 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 314 flow [2024-06-27 20:25:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 20:25:48,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:48,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:25:48,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:48,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1253900205, now seen corresponding path program 1 times [2024-06-27 20:25:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356848551] [2024-06-27 20:25:48,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:49,748 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 20:25:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356848551] [2024-06-27 20:25:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356848551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:49,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:25:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764482372] [2024-06-27 20:25:49,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:25:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:25:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:25:49,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 20:25:49,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:25:49,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:49,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 20:25:49,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:51,568 INFO L124 PetriNetUnfolderBase]: 11126/15584 cut-off events. [2024-06-27 20:25:51,569 INFO L125 PetriNetUnfolderBase]: For 19931/19934 co-relation queries the response was YES. [2024-06-27 20:25:51,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45883 conditions, 15584 events. 11126/15584 cut-off events. For 19931/19934 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86663 event pairs, 5300 based on Foata normal form. 10/15458 useless extension candidates. Maximal degree in co-relation 45866. Up to 14722 conditions per place. [2024-06-27 20:25:51,646 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 89 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-06-27 20:25:51,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 134 transitions, 860 flow [2024-06-27 20:25:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:25:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:25:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-06-27 20:25:51,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6383647798742138 [2024-06-27 20:25:51,648 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 314 flow. Second operand 6 states and 203 transitions. [2024-06-27 20:25:51,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 134 transitions, 860 flow [2024-06-27 20:25:51,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 848 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 20:25:51,656 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 552 flow [2024-06-27 20:25:51,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-27 20:25:51,657 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-06-27 20:25:51,657 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 552 flow [2024-06-27 20:25:51,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:25:51,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:51,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:51,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:25:51,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:51,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:51,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1936924905, now seen corresponding path program 1 times [2024-06-27 20:25:51,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:51,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191259800] [2024-06-27 20:25:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:25:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191259800] [2024-06-27 20:25:52,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191259800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:52,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:25:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609659001] [2024-06-27 20:25:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:52,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:25:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:25:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:25:52,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-27 20:25:52,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:52,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-27 20:25:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:54,392 INFO L124 PetriNetUnfolderBase]: 11313/15904 cut-off events. [2024-06-27 20:25:54,392 INFO L125 PetriNetUnfolderBase]: For 37625/37632 co-relation queries the response was YES. [2024-06-27 20:25:54,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53977 conditions, 15904 events. 11313/15904 cut-off events. For 37625/37632 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 89147 event pairs, 4394 based on Foata normal form. 40/15808 useless extension candidates. Maximal degree in co-relation 53954. Up to 14723 conditions per place. [2024-06-27 20:25:54,481 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 100 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-27 20:25:54,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1094 flow [2024-06-27 20:25:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:25:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:25:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-06-27 20:25:54,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253369272237197 [2024-06-27 20:25:54,483 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 552 flow. Second operand 7 states and 232 transitions. [2024-06-27 20:25:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1094 flow [2024-06-27 20:25:54,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 1072 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 20:25:54,499 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 647 flow [2024-06-27 20:25:54,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 20:25:54,502 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-27 20:25:54,503 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 647 flow [2024-06-27 20:25:54,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:54,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:54,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:54,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:25:54,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 676441086, now seen corresponding path program 1 times [2024-06-27 20:25:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290416047] [2024-06-27 20:25:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:55,082 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 20:25:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:55,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290416047] [2024-06-27 20:25:55,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290416047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:55,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:55,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:25:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872834651] [2024-06-27 20:25:55,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:55,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:25:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:25:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:25:55,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:25:55,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 20:25:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:55,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:25:55,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:56,772 INFO L124 PetriNetUnfolderBase]: 11295/15865 cut-off events. [2024-06-27 20:25:56,772 INFO L125 PetriNetUnfolderBase]: For 47664/47664 co-relation queries the response was YES. [2024-06-27 20:25:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56753 conditions, 15865 events. 11295/15865 cut-off events. For 47664/47664 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88550 event pairs, 5463 based on Foata normal form. 6/15722 useless extension candidates. Maximal degree in co-relation 56726. Up to 15295 conditions per place. [2024-06-27 20:25:56,866 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 81 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-27 20:25:56,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 879 flow [2024-06-27 20:25:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:25:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:25:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 20:25:56,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867924528301887 [2024-06-27 20:25:56,867 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 647 flow. Second operand 5 states and 129 transitions. [2024-06-27 20:25:56,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 879 flow [2024-06-27 20:25:56,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 782 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 20:25:56,886 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 590 flow [2024-06-27 20:25:56,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-27 20:25:56,886 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-06-27 20:25:56,887 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 590 flow [2024-06-27 20:25:56,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 20:25:56,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:56,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:56,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:25:56,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:56,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 826868091, now seen corresponding path program 1 times [2024-06-27 20:25:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:56,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398013046] [2024-06-27 20:25:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:56,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:25:57,659 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 20:25:57,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:25:57,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398013046] [2024-06-27 20:25:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398013046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:25:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:25:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:25:57,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408251417] [2024-06-27 20:25:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:25:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:25:57,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:25:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:25:57,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:25:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:25:57,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 590 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:57,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:25:57,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:25:57,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:25:59,367 INFO L124 PetriNetUnfolderBase]: 11321/15888 cut-off events. [2024-06-27 20:25:59,367 INFO L125 PetriNetUnfolderBase]: For 53623/53623 co-relation queries the response was YES. [2024-06-27 20:25:59,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57451 conditions, 15888 events. 11321/15888 cut-off events. For 53623/53623 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88494 event pairs, 5172 based on Foata normal form. 12/15745 useless extension candidates. Maximal degree in co-relation 57422. Up to 15142 conditions per place. [2024-06-27 20:25:59,466 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 88 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-27 20:25:59,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 980 flow [2024-06-27 20:25:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:25:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:25:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 20:25:59,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157232704402516 [2024-06-27 20:25:59,468 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 590 flow. Second operand 6 states and 164 transitions. [2024-06-27 20:25:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 980 flow [2024-06-27 20:25:59,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 939 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:25:59,488 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 658 flow [2024-06-27 20:25:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-06-27 20:25:59,489 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-27 20:25:59,489 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 658 flow [2024-06-27 20:25:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:25:59,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:25:59,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:25:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:25:59,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:25:59,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:25:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1519860381, now seen corresponding path program 2 times [2024-06-27 20:25:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:25:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677668493] [2024-06-27 20:25:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:25:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:25:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:00,200 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 20:26:00,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:00,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677668493] [2024-06-27 20:26:00,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677668493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:00,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:00,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:26:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425004246] [2024-06-27 20:26:00,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:00,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:26:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:26:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:26:00,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:00,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 658 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:26:00,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:00,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:00,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:01,855 INFO L124 PetriNetUnfolderBase]: 11276/15827 cut-off events. [2024-06-27 20:26:01,855 INFO L125 PetriNetUnfolderBase]: For 61213/61213 co-relation queries the response was YES. [2024-06-27 20:26:01,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58526 conditions, 15827 events. 11276/15827 cut-off events. For 61213/61213 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88127 event pairs, 5427 based on Foata normal form. 6/15680 useless extension candidates. Maximal degree in co-relation 58497. Up to 15250 conditions per place. [2024-06-27 20:26:01,967 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 92 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-27 20:26:01,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 936 flow [2024-06-27 20:26:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:26:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:26:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 20:26:01,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-27 20:26:01,969 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 658 flow. Second operand 6 states and 153 transitions. [2024-06-27 20:26:01,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 936 flow [2024-06-27 20:26:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 893 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:26:02,001 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 654 flow [2024-06-27 20:26:02,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-06-27 20:26:02,002 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-27 20:26:02,002 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 654 flow [2024-06-27 20:26:02,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:26:02,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:02,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:26:02,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:02,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 40486091, now seen corresponding path program 1 times [2024-06-27 20:26:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262806438] [2024-06-27 20:26:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:03,234 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 20:26:03,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:03,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262806438] [2024-06-27 20:26:03,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262806438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:03,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:03,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217781533] [2024-06-27 20:26:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:03,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:03,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:03,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:03,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 654 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 20:26:03,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:03,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:03,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:05,215 INFO L124 PetriNetUnfolderBase]: 13685/19116 cut-off events. [2024-06-27 20:26:05,216 INFO L125 PetriNetUnfolderBase]: For 83542/83542 co-relation queries the response was YES. [2024-06-27 20:26:05,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70502 conditions, 19116 events. 13685/19116 cut-off events. For 83542/83542 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 106923 event pairs, 6621 based on Foata normal form. 6/18939 useless extension candidates. Maximal degree in co-relation 70472. Up to 18428 conditions per place. [2024-06-27 20:26:05,339 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 101 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-27 20:26:05,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 1049 flow [2024-06-27 20:26:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:26:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:26:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 20:26:05,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-27 20:26:05,340 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 654 flow. Second operand 7 states and 171 transitions. [2024-06-27 20:26:05,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 1049 flow [2024-06-27 20:26:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 979 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:26:05,388 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 718 flow [2024-06-27 20:26:05,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-06-27 20:26:05,389 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-06-27 20:26:05,389 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 718 flow [2024-06-27 20:26:05,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 20:26:05,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:05,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:05,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:26:05,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:05,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -827292957, now seen corresponding path program 1 times [2024-06-27 20:26:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803084270] [2024-06-27 20:26:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:05,978 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 20:26:05,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803084270] [2024-06-27 20:26:05,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803084270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:05,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:05,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:26:05,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505102918] [2024-06-27 20:26:05,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:05,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:26:05,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:26:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:26:06,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:06,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:26:06,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:06,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:06,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:07,799 INFO L124 PetriNetUnfolderBase]: 13671/19221 cut-off events. [2024-06-27 20:26:07,799 INFO L125 PetriNetUnfolderBase]: For 100846/100846 co-relation queries the response was YES. [2024-06-27 20:26:07,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74634 conditions, 19221 events. 13671/19221 cut-off events. For 100846/100846 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 108062 event pairs, 6697 based on Foata normal form. 4/19203 useless extension candidates. Maximal degree in co-relation 74603. Up to 18467 conditions per place. [2024-06-27 20:26:07,926 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 98 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2024-06-27 20:26:07,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 1010 flow [2024-06-27 20:26:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:26:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:26:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 20:26:07,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45660377358490567 [2024-06-27 20:26:07,928 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 718 flow. Second operand 5 states and 121 transitions. [2024-06-27 20:26:07,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 1010 flow [2024-06-27 20:26:07,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 950 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 20:26:07,982 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 733 flow [2024-06-27 20:26:07,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=733, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-27 20:26:07,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-06-27 20:26:07,983 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 733 flow [2024-06-27 20:26:07,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:26:07,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:07,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:07,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:26:07,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:07,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash 47516826, now seen corresponding path program 1 times [2024-06-27 20:26:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:07,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393945105] [2024-06-27 20:26:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:08,928 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 20:26:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393945105] [2024-06-27 20:26:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393945105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:08,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:26:08,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818379285] [2024-06-27 20:26:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:08,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:26:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:26:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:26:09,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:09,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 20:26:09,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:09,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:09,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:10,921 INFO L124 PetriNetUnfolderBase]: 13369/18816 cut-off events. [2024-06-27 20:26:10,922 INFO L125 PetriNetUnfolderBase]: For 119660/119668 co-relation queries the response was YES. [2024-06-27 20:26:10,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77149 conditions, 18816 events. 13369/18816 cut-off events. For 119660/119668 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 108236 event pairs, 5929 based on Foata normal form. 10/18794 useless extension candidates. Maximal degree in co-relation 77117. Up to 17685 conditions per place. [2024-06-27 20:26:11,063 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 97 selfloop transitions, 48 changer transitions 0/153 dead transitions. [2024-06-27 20:26:11,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 153 transitions, 1339 flow [2024-06-27 20:26:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:26:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:26:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 20:26:11,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-27 20:26:11,065 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 733 flow. Second operand 7 states and 196 transitions. [2024-06-27 20:26:11,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 153 transitions, 1339 flow [2024-06-27 20:26:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 1294 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 20:26:11,152 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 883 flow [2024-06-27 20:26:11,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=883, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-27 20:26:11,168 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-06-27 20:26:11,168 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 883 flow [2024-06-27 20:26:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 20:26:11,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:11,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:11,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:26:11,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:11,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1047989990, now seen corresponding path program 2 times [2024-06-27 20:26:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357505411] [2024-06-27 20:26:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:12,247 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 20:26:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357505411] [2024-06-27 20:26:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357505411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:26:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116966949] [2024-06-27 20:26:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:26:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:26:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:26:12,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:12,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 883 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 20:26:12,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:12,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:12,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:14,379 INFO L124 PetriNetUnfolderBase]: 13351/18792 cut-off events. [2024-06-27 20:26:14,379 INFO L125 PetriNetUnfolderBase]: For 143945/143953 co-relation queries the response was YES. [2024-06-27 20:26:14,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81413 conditions, 18792 events. 13351/18792 cut-off events. For 143945/143953 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 107916 event pairs, 6039 based on Foata normal form. 10/18762 useless extension candidates. Maximal degree in co-relation 81380. Up to 17770 conditions per place. [2024-06-27 20:26:14,512 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 97 selfloop transitions, 42 changer transitions 0/147 dead transitions. [2024-06-27 20:26:14,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1331 flow [2024-06-27 20:26:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:26:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:26:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-27 20:26:14,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121293800539084 [2024-06-27 20:26:14,514 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 883 flow. Second operand 7 states and 190 transitions. [2024-06-27 20:26:14,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1331 flow [2024-06-27 20:26:14,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1235 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 20:26:14,604 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 882 flow [2024-06-27 20:26:14,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=882, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-06-27 20:26:14,606 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-06-27 20:26:14,606 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 882 flow [2024-06-27 20:26:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 20:26:14,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:14,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:14,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:26:14,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:14,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2022516052, now seen corresponding path program 1 times [2024-06-27 20:26:14,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:14,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408054384] [2024-06-27 20:26:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:15,670 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 20:26:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408054384] [2024-06-27 20:26:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408054384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:15,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:15,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269276133] [2024-06-27 20:26:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:15,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:15,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:15,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 20:26:15,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:15,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:17,761 INFO L124 PetriNetUnfolderBase]: 13745/19275 cut-off events. [2024-06-27 20:26:17,761 INFO L125 PetriNetUnfolderBase]: For 161214/161214 co-relation queries the response was YES. [2024-06-27 20:26:17,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85134 conditions, 19275 events. 13745/19275 cut-off events. For 161214/161214 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 108177 event pairs, 6556 based on Foata normal form. 3/19241 useless extension candidates. Maximal degree in co-relation 85099. Up to 18497 conditions per place. [2024-06-27 20:26:17,883 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 112 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2024-06-27 20:26:17,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 143 transitions, 1287 flow [2024-06-27 20:26:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:26:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:26:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 20:26:17,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636118598382749 [2024-06-27 20:26:17,885 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 882 flow. Second operand 7 states and 172 transitions. [2024-06-27 20:26:17,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 143 transitions, 1287 flow [2024-06-27 20:26:17,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1204 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:26:17,956 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 920 flow [2024-06-27 20:26:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-06-27 20:26:17,957 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-27 20:26:17,957 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 920 flow [2024-06-27 20:26:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 20:26:17,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:17,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:26:17,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:17,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1331443188, now seen corresponding path program 1 times [2024-06-27 20:26:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:17,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761338253] [2024-06-27 20:26:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:19,200 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 20:26:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761338253] [2024-06-27 20:26:19,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761338253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:19,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:19,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257498080] [2024-06-27 20:26:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:19,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:19,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 920 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:19,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:19,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:19,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:21,471 INFO L124 PetriNetUnfolderBase]: 13977/19623 cut-off events. [2024-06-27 20:26:21,472 INFO L125 PetriNetUnfolderBase]: For 187502/187502 co-relation queries the response was YES. [2024-06-27 20:26:21,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88510 conditions, 19623 events. 13977/19623 cut-off events. For 187502/187502 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 112772 event pairs, 4111 based on Foata normal form. 24/19538 useless extension candidates. Maximal degree in co-relation 88474. Up to 17701 conditions per place. [2024-06-27 20:26:21,603 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 126 selfloop transitions, 47 changer transitions 0/181 dead transitions. [2024-06-27 20:26:21,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 181 transitions, 1632 flow [2024-06-27 20:26:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-27 20:26:21,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259433962264151 [2024-06-27 20:26:21,611 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 920 flow. Second operand 8 states and 223 transitions. [2024-06-27 20:26:21,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 181 transitions, 1632 flow [2024-06-27 20:26:21,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 181 transitions, 1535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:26:21,706 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1083 flow [2024-06-27 20:26:21,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1083, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 20:26:21,707 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-27 20:26:21,707 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1083 flow [2024-06-27 20:26:21,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:21,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:21,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:21,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:26:21,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:21,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1642088000, now seen corresponding path program 2 times [2024-06-27 20:26:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484653157] [2024-06-27 20:26:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:22,739 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 20:26:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484653157] [2024-06-27 20:26:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484653157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:22,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:22,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:22,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243258644] [2024-06-27 20:26:22,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:22,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:22,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:22,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1083 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:22,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:22,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:25,357 INFO L124 PetriNetUnfolderBase]: 14141/19913 cut-off events. [2024-06-27 20:26:25,358 INFO L125 PetriNetUnfolderBase]: For 216457/216465 co-relation queries the response was YES. [2024-06-27 20:26:25,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93476 conditions, 19913 events. 14141/19913 cut-off events. For 216457/216465 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 115349 event pairs, 5397 based on Foata normal form. 34/19905 useless extension candidates. Maximal degree in co-relation 93437. Up to 18556 conditions per place. [2024-06-27 20:26:25,514 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 113 selfloop transitions, 57 changer transitions 0/178 dead transitions. [2024-06-27 20:26:25,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 178 transitions, 1699 flow [2024-06-27 20:26:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-27 20:26:25,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2024-06-27 20:26:25,516 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1083 flow. Second operand 8 states and 220 transitions. [2024-06-27 20:26:25,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 178 transitions, 1699 flow [2024-06-27 20:26:25,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 178 transitions, 1649 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:26:25,651 INFO L231 Difference]: Finished difference. Result has 104 places, 123 transitions, 1201 flow [2024-06-27 20:26:25,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1201, PETRI_PLACES=104, PETRI_TRANSITIONS=123} [2024-06-27 20:26:25,652 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2024-06-27 20:26:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 123 transitions, 1201 flow [2024-06-27 20:26:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:25,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:25,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:26:25,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1475819440, now seen corresponding path program 3 times [2024-06-27 20:26:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725446648] [2024-06-27 20:26:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:26,813 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 20:26:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725446648] [2024-06-27 20:26:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725446648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:26,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:26,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685823107] [2024-06-27 20:26:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:26,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-27 20:26:26,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 123 transitions, 1201 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:26,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:26,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-27 20:26:26,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:29,333 INFO L124 PetriNetUnfolderBase]: 14203/20016 cut-off events. [2024-06-27 20:26:29,333 INFO L125 PetriNetUnfolderBase]: For 239077/239085 co-relation queries the response was YES. [2024-06-27 20:26:29,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95782 conditions, 20016 events. 14203/20016 cut-off events. For 239077/239085 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 116026 event pairs, 5540 based on Foata normal form. 34/20008 useless extension candidates. Maximal degree in co-relation 95741. Up to 18784 conditions per place. [2024-06-27 20:26:29,457 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 122 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-06-27 20:26:29,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 177 transitions, 1817 flow [2024-06-27 20:26:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-27 20:26:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117924528301887 [2024-06-27 20:26:29,459 INFO L175 Difference]: Start difference. First operand has 104 places, 123 transitions, 1201 flow. Second operand 8 states and 217 transitions. [2024-06-27 20:26:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 177 transitions, 1817 flow [2024-06-27 20:26:29,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 177 transitions, 1689 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:26:29,637 INFO L231 Difference]: Finished difference. Result has 106 places, 125 transitions, 1225 flow [2024-06-27 20:26:29,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1225, PETRI_PLACES=106, PETRI_TRANSITIONS=125} [2024-06-27 20:26:29,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-27 20:26:29,646 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 125 transitions, 1225 flow [2024-06-27 20:26:29,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 20:26:29,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:29,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:29,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:26:29,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:29,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:29,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1591295308, now seen corresponding path program 1 times [2024-06-27 20:26:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:29,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601578708] [2024-06-27 20:26:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:29,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:31,056 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 20:26:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601578708] [2024-06-27 20:26:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601578708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:26:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234013252] [2024-06-27 20:26:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:26:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:26:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:26:31,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:31,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 125 transitions, 1225 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:31,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:31,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:33,564 INFO L124 PetriNetUnfolderBase]: 14611/20450 cut-off events. [2024-06-27 20:26:33,564 INFO L125 PetriNetUnfolderBase]: For 261892/261897 co-relation queries the response was YES. [2024-06-27 20:26:33,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99377 conditions, 20450 events. 14611/20450 cut-off events. For 261892/261897 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 115438 event pairs, 5918 based on Foata normal form. 14/20421 useless extension candidates. Maximal degree in co-relation 99335. Up to 19475 conditions per place. [2024-06-27 20:26:33,687 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 133 selfloop transitions, 40 changer transitions 0/179 dead transitions. [2024-06-27 20:26:33,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 179 transitions, 1805 flow [2024-06-27 20:26:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 20:26:33,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-27 20:26:33,688 INFO L175 Difference]: Start difference. First operand has 106 places, 125 transitions, 1225 flow. Second operand 8 states and 206 transitions. [2024-06-27 20:26:33,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 179 transitions, 1805 flow [2024-06-27 20:26:33,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 179 transitions, 1685 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:26:33,874 INFO L231 Difference]: Finished difference. Result has 109 places, 134 transitions, 1327 flow [2024-06-27 20:26:33,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=109, PETRI_TRANSITIONS=134} [2024-06-27 20:26:33,875 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 53 predicate places. [2024-06-27 20:26:33,875 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 134 transitions, 1327 flow [2024-06-27 20:26:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:33,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:33,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:26:33,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:33,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash -470985726, now seen corresponding path program 1 times [2024-06-27 20:26:33,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:33,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339931376] [2024-06-27 20:26:33,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:34,647 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 20:26:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339931376] [2024-06-27 20:26:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339931376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:34,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:26:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065312610] [2024-06-27 20:26:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:34,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:26:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:26:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:26:34,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:34,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 134 transitions, 1327 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:26:34,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:34,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:34,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:37,064 INFO L124 PetriNetUnfolderBase]: 14666/20524 cut-off events. [2024-06-27 20:26:37,064 INFO L125 PetriNetUnfolderBase]: For 286828/286828 co-relation queries the response was YES. [2024-06-27 20:26:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103207 conditions, 20524 events. 14666/20524 cut-off events. For 286828/286828 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 115751 event pairs, 6172 based on Foata normal form. 4/20483 useless extension candidates. Maximal degree in co-relation 103163. Up to 19873 conditions per place. [2024-06-27 20:26:37,245 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 147 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2024-06-27 20:26:37,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 1907 flow [2024-06-27 20:26:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:26:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:26:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 20:26:37,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-27 20:26:37,246 INFO L175 Difference]: Start difference. First operand has 109 places, 134 transitions, 1327 flow. Second operand 6 states and 152 transitions. [2024-06-27 20:26:37,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 1907 flow [2024-06-27 20:26:37,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 174 transitions, 1786 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 20:26:37,474 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1387 flow [2024-06-27 20:26:37,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1387, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2024-06-27 20:26:37,475 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-27 20:26:37,475 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1387 flow [2024-06-27 20:26:37,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:26:37,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:37,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:26:37,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:37,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 15994188, now seen corresponding path program 2 times [2024-06-27 20:26:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:37,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878478860] [2024-06-27 20:26:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:39,083 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 20:26:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878478860] [2024-06-27 20:26:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878478860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:39,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:39,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:26:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059270129] [2024-06-27 20:26:39,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:39,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:26:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:26:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:26:39,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:39,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1387 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:39,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:39,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:39,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:41,598 INFO L124 PetriNetUnfolderBase]: 14702/20579 cut-off events. [2024-06-27 20:26:41,599 INFO L125 PetriNetUnfolderBase]: For 322848/322848 co-relation queries the response was YES. [2024-06-27 20:26:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108166 conditions, 20579 events. 14702/20579 cut-off events. For 322848/322848 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 116162 event pairs, 6170 based on Foata normal form. 6/20542 useless extension candidates. Maximal degree in co-relation 108120. Up to 19862 conditions per place. [2024-06-27 20:26:41,783 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 160 selfloop transitions, 28 changer transitions 0/194 dead transitions. [2024-06-27 20:26:41,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 194 transitions, 1975 flow [2024-06-27 20:26:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 20:26:41,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462264150943394 [2024-06-27 20:26:41,793 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1387 flow. Second operand 8 states and 197 transitions. [2024-06-27 20:26:41,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 194 transitions, 1975 flow [2024-06-27 20:26:42,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 194 transitions, 1935 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 20:26:42,052 INFO L231 Difference]: Finished difference. Result has 119 places, 153 transitions, 1535 flow [2024-06-27 20:26:42,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1535, PETRI_PLACES=119, PETRI_TRANSITIONS=153} [2024-06-27 20:26:42,052 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-27 20:26:42,052 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 153 transitions, 1535 flow [2024-06-27 20:26:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:42,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:42,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:26:42,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:42,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1763190552, now seen corresponding path program 3 times [2024-06-27 20:26:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118692741] [2024-06-27 20:26:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:26:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118692741] [2024-06-27 20:26:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118692741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:43,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:43,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:26:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134361694] [2024-06-27 20:26:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:43,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:26:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:26:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:26:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:43,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 153 transitions, 1535 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:43,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:43,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:46,187 INFO L124 PetriNetUnfolderBase]: 14687/20558 cut-off events. [2024-06-27 20:26:46,187 INFO L125 PetriNetUnfolderBase]: For 354838/354838 co-relation queries the response was YES. [2024-06-27 20:26:46,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111139 conditions, 20558 events. 14687/20558 cut-off events. For 354838/354838 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 116050 event pairs, 6167 based on Foata normal form. 6/20521 useless extension candidates. Maximal degree in co-relation 111089. Up to 19886 conditions per place. [2024-06-27 20:26:46,353 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 169 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2024-06-27 20:26:46,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 196 transitions, 2087 flow [2024-06-27 20:26:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 20:26:46,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45754716981132076 [2024-06-27 20:26:46,356 INFO L175 Difference]: Start difference. First operand has 119 places, 153 transitions, 1535 flow. Second operand 8 states and 194 transitions. [2024-06-27 20:26:46,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 196 transitions, 2087 flow [2024-06-27 20:26:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 196 transitions, 1975 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 20:26:46,650 INFO L231 Difference]: Finished difference. Result has 122 places, 156 transitions, 1549 flow [2024-06-27 20:26:46,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1549, PETRI_PLACES=122, PETRI_TRANSITIONS=156} [2024-06-27 20:26:46,650 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-27 20:26:46,651 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 156 transitions, 1549 flow [2024-06-27 20:26:46,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:46,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:46,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:46,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:26:46,652 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:46,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash 945160316, now seen corresponding path program 4 times [2024-06-27 20:26:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:46,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984125119] [2024-06-27 20:26:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:46,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:48,145 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 20:26:48,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:48,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984125119] [2024-06-27 20:26:48,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984125119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:48,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:48,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:26:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108615264] [2024-06-27 20:26:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:48,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:26:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:26:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:26:48,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:48,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 156 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:48,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:48,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:48,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:50,864 INFO L124 PetriNetUnfolderBase]: 14723/20610 cut-off events. [2024-06-27 20:26:50,864 INFO L125 PetriNetUnfolderBase]: For 386892/386892 co-relation queries the response was YES. [2024-06-27 20:26:50,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113425 conditions, 20610 events. 14723/20610 cut-off events. For 386892/386892 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 116319 event pairs, 6161 based on Foata normal form. 6/20573 useless extension candidates. Maximal degree in co-relation 113374. Up to 19878 conditions per place. [2024-06-27 20:26:51,053 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 162 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-06-27 20:26:51,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 199 transitions, 2093 flow [2024-06-27 20:26:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:26:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:26:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 20:26:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45990566037735847 [2024-06-27 20:26:51,055 INFO L175 Difference]: Start difference. First operand has 122 places, 156 transitions, 1549 flow. Second operand 8 states and 195 transitions. [2024-06-27 20:26:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 199 transitions, 2093 flow [2024-06-27 20:26:51,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 2001 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 20:26:51,333 INFO L231 Difference]: Finished difference. Result has 125 places, 159 transitions, 1593 flow [2024-06-27 20:26:51,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1593, PETRI_PLACES=125, PETRI_TRANSITIONS=159} [2024-06-27 20:26:51,334 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 20:26:51,334 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 159 transitions, 1593 flow [2024-06-27 20:26:51,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:51,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:51,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:26:51,334 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:51,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 945160068, now seen corresponding path program 1 times [2024-06-27 20:26:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:51,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348613394] [2024-06-27 20:26:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:52,609 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 20:26:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348613394] [2024-06-27 20:26:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348613394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:52,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:52,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:26:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856689117] [2024-06-27 20:26:52,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:26:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:26:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:26:52,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:52,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 159 transitions, 1593 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 20:26:52,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:52,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:52,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:55,384 INFO L124 PetriNetUnfolderBase]: 14678/20539 cut-off events. [2024-06-27 20:26:55,392 INFO L125 PetriNetUnfolderBase]: For 427570/427580 co-relation queries the response was YES. [2024-06-27 20:26:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116235 conditions, 20539 events. 14678/20539 cut-off events. For 427570/427580 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 115617 event pairs, 5892 based on Foata normal form. 7/20424 useless extension candidates. Maximal degree in co-relation 116183. Up to 19570 conditions per place. [2024-06-27 20:26:55,558 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 135 selfloop transitions, 51 changer transitions 0/192 dead transitions. [2024-06-27 20:26:55,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 192 transitions, 2059 flow [2024-06-27 20:26:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:26:55,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:26:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 20:26:55,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-06-27 20:26:55,560 INFO L175 Difference]: Start difference. First operand has 125 places, 159 transitions, 1593 flow. Second operand 6 states and 163 transitions. [2024-06-27 20:26:55,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 192 transitions, 2059 flow [2024-06-27 20:26:55,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 192 transitions, 1955 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:26:55,905 INFO L231 Difference]: Finished difference. Result has 125 places, 159 transitions, 1613 flow [2024-06-27 20:26:55,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1613, PETRI_PLACES=125, PETRI_TRANSITIONS=159} [2024-06-27 20:26:55,906 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-06-27 20:26:55,906 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 159 transitions, 1613 flow [2024-06-27 20:26:55,906 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 20:26:55,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:26:55,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:26:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:26:55,907 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:26:55,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:26:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash 853286856, now seen corresponding path program 5 times [2024-06-27 20:26:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:26:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199854809] [2024-06-27 20:26:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:26:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:26:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:26:57,043 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 20:26:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:26:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199854809] [2024-06-27 20:26:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199854809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:26:57,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:26:57,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:26:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829541032] [2024-06-27 20:26:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:26:57,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:26:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:26:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:26:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:26:57,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:26:57,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 159 transitions, 1613 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:26:57,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:26:57,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:26:57,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:26:59,988 INFO L124 PetriNetUnfolderBase]: 14663/20514 cut-off events. [2024-06-27 20:26:59,988 INFO L125 PetriNetUnfolderBase]: For 457762/457762 co-relation queries the response was YES. [2024-06-27 20:27:00,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117503 conditions, 20514 events. 14663/20514 cut-off events. For 457762/457762 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 115193 event pairs, 6042 based on Foata normal form. 6/20401 useless extension candidates. Maximal degree in co-relation 117450. Up to 19819 conditions per place. [2024-06-27 20:27:00,131 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 173 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-27 20:27:00,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 202 transitions, 2167 flow [2024-06-27 20:27:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:27:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:27:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 20:27:00,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45754716981132076 [2024-06-27 20:27:00,132 INFO L175 Difference]: Start difference. First operand has 125 places, 159 transitions, 1613 flow. Second operand 8 states and 194 transitions. [2024-06-27 20:27:00,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 202 transitions, 2167 flow [2024-06-27 20:27:00,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 202 transitions, 2065 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 20:27:00,398 INFO L231 Difference]: Finished difference. Result has 128 places, 162 transitions, 1633 flow [2024-06-27 20:27:00,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1633, PETRI_PLACES=128, PETRI_TRANSITIONS=162} [2024-06-27 20:27:00,398 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-27 20:27:00,398 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 162 transitions, 1633 flow [2024-06-27 20:27:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 20:27:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:27:00,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:27:00,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:27:00,399 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:27:00,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:27:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash 205377234, now seen corresponding path program 2 times [2024-06-27 20:27:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:27:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452814125] [2024-06-27 20:27:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:27:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:27:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:27:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:27:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:27:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452814125] [2024-06-27 20:27:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452814125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:27:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:27:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:27:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356201246] [2024-06-27 20:27:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:27:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:27:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:27:00,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:27:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:27:01,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:27:01,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 162 transitions, 1633 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:27:01,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:27:01,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:27:01,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:27:04,006 INFO L124 PetriNetUnfolderBase]: 14649/20496 cut-off events. [2024-06-27 20:27:04,006 INFO L125 PetriNetUnfolderBase]: For 493011/493011 co-relation queries the response was YES. [2024-06-27 20:27:04,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120338 conditions, 20496 events. 14649/20496 cut-off events. For 493011/493011 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 115377 event pairs, 6158 based on Foata normal form. 4/20457 useless extension candidates. Maximal degree in co-relation 120284. Up to 19887 conditions per place. [2024-06-27 20:27:04,158 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 161 selfloop transitions, 14 changer transitions 0/181 dead transitions. [2024-06-27 20:27:04,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 181 transitions, 2033 flow [2024-06-27 20:27:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:27:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:27:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 20:27:04,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-27 20:27:04,159 INFO L175 Difference]: Start difference. First operand has 128 places, 162 transitions, 1633 flow. Second operand 6 states and 141 transitions. [2024-06-27 20:27:04,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 181 transitions, 2033 flow [2024-06-27 20:27:04,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 181 transitions, 1915 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 20:27:04,474 INFO L231 Difference]: Finished difference. Result has 128 places, 162 transitions, 1552 flow [2024-06-27 20:27:04,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1552, PETRI_PLACES=128, PETRI_TRANSITIONS=162} [2024-06-27 20:27:04,475 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-27 20:27:04,475 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 162 transitions, 1552 flow [2024-06-27 20:27:04,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:27:04,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:27:04,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:27:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:27:04,476 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:27:04,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:27:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash -465265854, now seen corresponding path program 1 times [2024-06-27 20:27:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:27:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811911189] [2024-06-27 20:27:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:27:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:27:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:27:05,253 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 20:27:05,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:27:05,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811911189] [2024-06-27 20:27:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811911189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:27:05,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:27:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:27:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835218881] [2024-06-27 20:27:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:27:05,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:27:05,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:27:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:27:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:27:05,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:27:05,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 162 transitions, 1552 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:27:05,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:27:05,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:27:05,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:27:08,168 INFO L124 PetriNetUnfolderBase]: 14681/20528 cut-off events. [2024-06-27 20:27:08,168 INFO L125 PetriNetUnfolderBase]: For 525125/525125 co-relation queries the response was YES. [2024-06-27 20:27:08,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121597 conditions, 20528 events. 14681/20528 cut-off events. For 525125/525125 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 115525 event pairs, 6154 based on Foata normal form. 4/20482 useless extension candidates. Maximal degree in co-relation 121542. Up to 19876 conditions per place. [2024-06-27 20:27:08,319 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 165 selfloop transitions, 24 changer transitions 0/195 dead transitions. [2024-06-27 20:27:08,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 195 transitions, 2196 flow [2024-06-27 20:27:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:27:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:27:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 20:27:08,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-27 20:27:08,320 INFO L175 Difference]: Start difference. First operand has 128 places, 162 transitions, 1552 flow. Second operand 6 states and 150 transitions. [2024-06-27 20:27:08,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 195 transitions, 2196 flow [2024-06-27 20:27:08,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 195 transitions, 2144 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:27:08,646 INFO L231 Difference]: Finished difference. Result has 129 places, 170 transitions, 1669 flow [2024-06-27 20:27:08,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1669, PETRI_PLACES=129, PETRI_TRANSITIONS=170} [2024-06-27 20:27:08,646 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-27 20:27:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 170 transitions, 1669 flow [2024-06-27 20:27:08,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:27:08,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:27:08,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:27:08,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:27:08,647 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:27:08,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:27:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 227726436, now seen corresponding path program 2 times [2024-06-27 20:27:08,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:27:08,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727677458] [2024-06-27 20:27:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:27:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:27:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:27:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:27:09,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:27:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727677458] [2024-06-27 20:27:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727677458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:27:09,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:27:09,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:27:09,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464710226] [2024-06-27 20:27:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:27:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:27:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:27:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:27:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:27:09,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-27 20:27:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 170 transitions, 1669 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 20:27:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:27:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-27 20:27:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand