./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b 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/stack-1.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-8857f20-m [2024-01-29 22:49:41,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:49:41,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:49:41,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:49:41,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:49:41,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:49:41,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:49:41,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:49:41,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:49:41,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:49:41,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:49:41,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:49:41,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:49:41,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:49:41,131 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:49:41,131 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:49:41,131 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:49:41,132 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:49:41,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:49:41,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:49:41,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:49:41,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:49:41,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:49:41,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:49:41,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:49:41,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:49:41,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:49:41,134 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:49:41,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:49:41,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:49:41,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:49:41,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:49:41,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:49:41,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:49:41,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:49:41,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:49:41,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:49:41,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:49:41,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:49:41,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:49:41,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:49:41,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:49:41,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:49:41,138 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:49:41,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:49:41,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:49:41,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:49:41,386 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:49:41,387 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:49:41,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2024-01-29 22:49:43,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:49:43,270 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:49:43,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2024-01-29 22:49:43,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47f62d06/1bfe28515a4443f29b01231611cdf7cd/FLAG7fed96fe4 [2024-01-29 22:49:43,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b47f62d06/1bfe28515a4443f29b01231611cdf7cd [2024-01-29 22:49:43,305 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:49:43,306 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:49:43,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stack-1.yml/witness.yml [2024-01-29 22:49:43,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:49:43,377 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:49:43,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:49:43,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:49:43,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:49:43,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:49:43" (1/2) ... [2024-01-29 22:49:43,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb77265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:43, skipping insertion in model container [2024-01-29 22:49:43,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:49:43" (1/2) ... [2024-01-29 22:49:43,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@489423b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:43, skipping insertion in model container [2024-01-29 22:49:43,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:43" (2/2) ... [2024-01-29 22:49:43,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb77265 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:43, skipping insertion in model container [2024-01-29 22:49:43,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:43" (2/2) ... [2024-01-29 22:49:43,387 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:49:43,433 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:49:43,434 INFO L98 nessWitnessExtractor]: Location invariant before [L997-L998] ((unsigned long )arg == 0UL) && (((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || i == 4) [2024-01-29 22:49:43,435 INFO L98 nessWitnessExtractor]: Location invariant after [L997-L998] (unsigned long )arg == 0UL [2024-01-29 22:49:43,435 INFO L98 nessWitnessExtractor]: Location invariant after [L997-L998] ((unsigned long )arg == 0UL) && ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || i == 4) [2024-01-29 22:49:43,435 INFO L98 nessWitnessExtractor]: Location invariant before [L997-L998] (unsigned long )arg == 0UL [2024-01-29 22:49:43,435 INFO L98 nessWitnessExtractor]: Location invariant before [L995-L995] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,436 INFO L98 nessWitnessExtractor]: Location invariant before [L995-L995] (unsigned long )arg == 0UL [2024-01-29 22:49:43,436 INFO L98 nessWitnessExtractor]: Location invariant before [L1008-L1008] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,436 INFO L98 nessWitnessExtractor]: Location invariant before [L1008-L1008] (unsigned long )arg == 0UL [2024-01-29 22:49:43,436 INFO L98 nessWitnessExtractor]: Loop invariant at [L1006-L1015] (unsigned long )arg == 0UL [2024-01-29 22:49:43,436 INFO L98 nessWitnessExtractor]: Location invariant before [L999-L999] (unsigned long )arg == 0UL [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L999-L999] ((unsigned long )arg == 0UL) && ((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || i == 4) [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L996-L996] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L996-L996] (unsigned long )arg == 0UL [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L1016-L1016] i == 5 [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L1016-L1016] (i == 5) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Loop invariant at [L992-L1000] (unsigned long )arg == 0UL [2024-01-29 22:49:43,437 INFO L98 nessWitnessExtractor]: Location invariant before [L1022-L1022] flag == (_Bool)0 [2024-01-29 22:49:43,438 INFO L98 nessWitnessExtractor]: Location invariant before [L994-L994] (unsigned long )arg == 0UL [2024-01-29 22:49:43,438 INFO L98 nessWitnessExtractor]: Location invariant before [L994-L994] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,438 INFO L98 nessWitnessExtractor]: Location invariant before [L1021-L1021] flag == (_Bool)0 [2024-01-29 22:49:43,438 INFO L98 nessWitnessExtractor]: Location invariant after [L1011-L1012] (unsigned long )arg == 0UL [2024-01-29 22:49:43,438 INFO L98 nessWitnessExtractor]: Location invariant before [L1011-L1012] ((unsigned long )arg == 0UL) && ((((((((i == 4 || i == 3) || i == 3) || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant after [L1011-L1012] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1011-L1012] (unsigned long )arg == 0UL [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1009-L1013] (unsigned long )arg == 0UL [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1009-L1013] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1001-L1001] i == 5 [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1001-L1001] (i == 5) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1014-L1014] (unsigned long )arg == 0UL [2024-01-29 22:49:43,439 INFO L98 nessWitnessExtractor]: Location invariant before [L1014-L1014] ((unsigned long )arg == 0UL) && ((((i == 4 || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 22:49:43,490 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:49:43,937 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2024-01-29 22:49:43,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:49:43,972 INFO L202 MainTranslator]: Completed pre-run [2024-01-29 22:49:43,995 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:49:44,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:49:44,085 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:49:44,085 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44 WrapperNode [2024-01-29 22:49:44,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:49:44,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:49:44,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:49:44,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:49:44,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,132 INFO L138 Inliner]: procedures = 278, calls = 45, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 192 [2024-01-29 22:49:44,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:49:44,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:49:44,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:49:44,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:49:44,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,162 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 5, 2, 2, 7]. 39 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 0, 5]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-01-29 22:49:44,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,207 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:49:44,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:49:44,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:49:44,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:49:44,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (1/1) ... [2024-01-29 22:49:44,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:49:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:44,234 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) [2024-01-29 22:49:44,249 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 [2024-01-29 22:49:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-29 22:49:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-29 22:49:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-29 22:49:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-29 22:49:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:49:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:49:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:49:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:49:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:49:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 22:49:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 22:49:44,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:49:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:49:44,304 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 22:49:44,441 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:49:44,443 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:49:44,754 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:49:44,756 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:49:44,905 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:49:44,905 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 22:49:44,906 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:49:44 BoogieIcfgContainer [2024-01-29 22:49:44,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:49:44,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:49:44,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:49:44,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:49:44,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:49:43" (1/4) ... [2024-01-29 22:49:44,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf51360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:49:44, skipping insertion in model container [2024-01-29 22:49:44,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:43" (2/4) ... [2024-01-29 22:49:44,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf51360 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:49:44, skipping insertion in model container [2024-01-29 22:49:44,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:44" (3/4) ... [2024-01-29 22:49:44,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf51360 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:49:44, skipping insertion in model container [2024-01-29 22:49:44,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:49:44" (4/4) ... [2024-01-29 22:49:44,916 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-01-29 22:49:44,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:49:44,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-29 22:49:44,931 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:49:44,996 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 22:49:45,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 99 transitions, 212 flow [2024-01-29 22:49:45,075 INFO L124 PetriNetUnfolderBase]: 5/97 cut-off events. [2024-01-29 22:49:45,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:49:45,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 5/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 311 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2024-01-29 22:49:45,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 99 transitions, 212 flow [2024-01-29 22:49:45,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 95 transitions, 199 flow [2024-01-29 22:49:45,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:49:45,101 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;@1665af52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:49:45,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-01-29 22:49:45,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:49:45,104 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:49:45,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:49:45,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:45,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:49:45,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:45,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 15809, now seen corresponding path program 1 times [2024-01-29 22:49:45,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:45,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027931054] [2024-01-29 22:49:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:45,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:45,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:45,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027931054] [2024-01-29 22:49:45,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027931054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:45,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:45,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:49:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654417491] [2024-01-29 22:49:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:45,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:45,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:45,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:49:45,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:45,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:45,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:49:45,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:45,838 INFO L124 PetriNetUnfolderBase]: 461/1666 cut-off events. [2024-01-29 22:49:45,838 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-29 22:49:45,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1666 events. 461/1666 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12725 event pairs, 357 based on Foata normal form. 48/1222 useless extension candidates. Maximal degree in co-relation 2276. Up to 714 conditions per place. [2024-01-29 22:49:45,857 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 28 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2024-01-29 22:49:45,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 91 transitions, 249 flow [2024-01-29 22:49:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2024-01-29 22:49:45,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-01-29 22:49:45,870 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 199 flow. Second operand 3 states and 225 transitions. [2024-01-29 22:49:45,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 91 transitions, 249 flow [2024-01-29 22:49:45,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:45,876 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 188 flow [2024-01-29 22:49:45,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-01-29 22:49:45,883 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2024-01-29 22:49:45,883 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 188 flow [2024-01-29 22:49:45,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:45,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:45,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 22:49:45,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:49:45,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:45,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1731818146, now seen corresponding path program 1 times [2024-01-29 22:49:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112679103] [2024-01-29 22:49:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112679103] [2024-01-29 22:49:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112679103] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:46,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537114891] [2024-01-29 22:49:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:46,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:46,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 99 [2024-01-29 22:49:46,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:46,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:46,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 99 [2024-01-29 22:49:46,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:46,394 INFO L124 PetriNetUnfolderBase]: 471/1600 cut-off events. [2024-01-29 22:49:46,394 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-29 22:49:46,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1600 events. 471/1600 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11901 event pairs, 185 based on Foata normal form. 184/1401 useless extension candidates. Maximal degree in co-relation 2361. Up to 704 conditions per place. [2024-01-29 22:49:46,404 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 39 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-01-29 22:49:46,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 280 flow [2024-01-29 22:49:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-01-29 22:49:46,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7095959595959596 [2024-01-29 22:49:46,410 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 188 flow. Second operand 4 states and 281 transitions. [2024-01-29 22:49:46,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 280 flow [2024-01-29 22:49:46,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:46,412 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 175 flow [2024-01-29 22:49:46,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-01-29 22:49:46,412 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -9 predicate places. [2024-01-29 22:49:46,413 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 175 flow [2024-01-29 22:49:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:46,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:46,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:49:46,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:46,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2123684677, now seen corresponding path program 1 times [2024-01-29 22:49:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900841376] [2024-01-29 22:49:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900841376] [2024-01-29 22:49:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900841376] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:46,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370182092] [2024-01-29 22:49:46,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:46,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:46,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 99 [2024-01-29 22:49:46,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:46,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:46,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 99 [2024-01-29 22:49:46,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:46,711 INFO L124 PetriNetUnfolderBase]: 411/1314 cut-off events. [2024-01-29 22:49:46,711 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-29 22:49:46,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2010 conditions, 1314 events. 411/1314 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9343 event pairs, 11 based on Foata normal form. 182/1277 useless extension candidates. Maximal degree in co-relation 2004. Up to 558 conditions per place. [2024-01-29 22:49:46,717 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 52 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-01-29 22:49:46,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 324 flow [2024-01-29 22:49:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-01-29 22:49:46,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-29 22:49:46,719 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 175 flow. Second operand 4 states and 297 transitions. [2024-01-29 22:49:46,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 324 flow [2024-01-29 22:49:46,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:46,721 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 162 flow [2024-01-29 22:49:46,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-01-29 22:49:46,721 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -15 predicate places. [2024-01-29 22:49:46,722 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 162 flow [2024-01-29 22:49:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:46,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:46,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:49:46,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:46,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2124912517, now seen corresponding path program 1 times [2024-01-29 22:49:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:46,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687355529] [2024-01-29 22:49:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:46,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:46,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687355529] [2024-01-29 22:49:46,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687355529] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:46,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:46,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:46,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344900388] [2024-01-29 22:49:46,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:46,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:46,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:46,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:46,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:46,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 99 [2024-01-29 22:49:46,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:46,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 99 [2024-01-29 22:49:46,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:47,129 INFO L124 PetriNetUnfolderBase]: 1569/3224 cut-off events. [2024-01-29 22:49:47,129 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-01-29 22:49:47,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 3224 events. 1569/3224 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21476 event pairs, 937 based on Foata normal form. 22/2806 useless extension candidates. Maximal degree in co-relation 6071. Up to 1555 conditions per place. [2024-01-29 22:49:47,145 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 85 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-01-29 22:49:47,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 432 flow [2024-01-29 22:49:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-01-29 22:49:47,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2024-01-29 22:49:47,147 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 162 flow. Second operand 4 states and 255 transitions. [2024-01-29 22:49:47,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 432 flow [2024-01-29 22:49:47,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:47,150 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 185 flow [2024-01-29 22:49:47,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-01-29 22:49:47,151 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -13 predicate places. [2024-01-29 22:49:47,152 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 185 flow [2024-01-29 22:49:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:47,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:49:47,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:47,160 INFO L85 PathProgramCache]: Analyzing trace with hash 751528169, now seen corresponding path program 1 times [2024-01-29 22:49:47,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:47,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23652034] [2024-01-29 22:49:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:47,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23652034] [2024-01-29 22:49:47,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23652034] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:47,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:47,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312320558] [2024-01-29 22:49:47,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:47,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:47,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 99 [2024-01-29 22:49:47,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:47,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:47,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 99 [2024-01-29 22:49:47,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:47,547 INFO L124 PetriNetUnfolderBase]: 1063/3433 cut-off events. [2024-01-29 22:49:47,547 INFO L125 PetriNetUnfolderBase]: For 111/152 co-relation queries the response was YES. [2024-01-29 22:49:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 3433 events. 1063/3433 cut-off events. For 111/152 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 27849 event pairs, 567 based on Foata normal form. 71/2980 useless extension candidates. Maximal degree in co-relation 5516. Up to 1099 conditions per place. [2024-01-29 22:49:47,561 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 50 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2024-01-29 22:49:47,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 342 flow [2024-01-29 22:49:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-01-29 22:49:47,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8282828282828283 [2024-01-29 22:49:47,562 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 185 flow. Second operand 3 states and 246 transitions. [2024-01-29 22:49:47,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 342 flow [2024-01-29 22:49:47,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:47,565 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 193 flow [2024-01-29 22:49:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-01-29 22:49:47,565 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2024-01-29 22:49:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 193 flow [2024-01-29 22:49:47,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:47,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:47,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:49:47,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:47,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1822536341, now seen corresponding path program 1 times [2024-01-29 22:49:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:47,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321892112] [2024-01-29 22:49:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321892112] [2024-01-29 22:49:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321892112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:47,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210626933] [2024-01-29 22:49:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:47,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2024-01-29 22:49:47,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2024-01-29 22:49:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:48,071 INFO L124 PetriNetUnfolderBase]: 2423/4919 cut-off events. [2024-01-29 22:49:48,071 INFO L125 PetriNetUnfolderBase]: For 375/506 co-relation queries the response was YES. [2024-01-29 22:49:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9672 conditions, 4919 events. 2423/4919 cut-off events. For 375/506 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 34514 event pairs, 1366 based on Foata normal form. 77/4410 useless extension candidates. Maximal degree in co-relation 9664. Up to 2502 conditions per place. [2024-01-29 22:49:48,097 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 89 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-01-29 22:49:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 481 flow [2024-01-29 22:49:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-01-29 22:49:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616161616161617 [2024-01-29 22:49:48,099 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 193 flow. Second operand 4 states and 262 transitions. [2024-01-29 22:49:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 481 flow [2024-01-29 22:49:48,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 122 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:48,102 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 209 flow [2024-01-29 22:49:48,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-01-29 22:49:48,102 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -9 predicate places. [2024-01-29 22:49:48,103 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 209 flow [2024-01-29 22:49:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:48,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:48,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:48,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:49:48,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:48,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1933197463, now seen corresponding path program 1 times [2024-01-29 22:49:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:48,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567302165] [2024-01-29 22:49:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567302165] [2024-01-29 22:49:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567302165] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:48,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:48,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319851135] [2024-01-29 22:49:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:48,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 99 [2024-01-29 22:49:48,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:48,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:48,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 99 [2024-01-29 22:49:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:48,416 INFO L124 PetriNetUnfolderBase]: 925/2772 cut-off events. [2024-01-29 22:49:48,416 INFO L125 PetriNetUnfolderBase]: For 300/317 co-relation queries the response was YES. [2024-01-29 22:49:48,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 2772 events. 925/2772 cut-off events. For 300/317 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21196 event pairs, 116 based on Foata normal form. 37/2662 useless extension candidates. Maximal degree in co-relation 5033. Up to 1225 conditions per place. [2024-01-29 22:49:48,427 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 58 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2024-01-29 22:49:48,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 421 flow [2024-01-29 22:49:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-01-29 22:49:48,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2024-01-29 22:49:48,429 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 209 flow. Second operand 4 states and 319 transitions. [2024-01-29 22:49:48,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 421 flow [2024-01-29 22:49:48,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 405 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:48,431 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 225 flow [2024-01-29 22:49:48,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-01-29 22:49:48,432 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -7 predicate places. [2024-01-29 22:49:48,432 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 225 flow [2024-01-29 22:49:48,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:48,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:48,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:49:48,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1100780729, now seen corresponding path program 1 times [2024-01-29 22:49:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:48,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715054736] [2024-01-29 22:49:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:48,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:48,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715054736] [2024-01-29 22:49:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715054736] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:49:48,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318587709] [2024-01-29 22:49:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:48,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:49:48,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 22:49:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:48,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-29 22:49:48,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:49:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:48,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:49:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:48,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318587709] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:49:48,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:49:48,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-01-29 22:49:48,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897938692] [2024-01-29 22:49:48,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:49:48,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 22:49:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 22:49:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-29 22:49:48,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 99 [2024-01-29 22:49:48,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:48,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:48,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 99 [2024-01-29 22:49:48,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:49,514 INFO L124 PetriNetUnfolderBase]: 2497/6282 cut-off events. [2024-01-29 22:49:49,515 INFO L125 PetriNetUnfolderBase]: For 964/1105 co-relation queries the response was YES. [2024-01-29 22:49:49,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12379 conditions, 6282 events. 2497/6282 cut-off events. For 964/1105 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 48643 event pairs, 267 based on Foata normal form. 179/6217 useless extension candidates. Maximal degree in co-relation 12367. Up to 933 conditions per place. [2024-01-29 22:49:49,546 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 134 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2024-01-29 22:49:49,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 181 transitions, 795 flow [2024-01-29 22:49:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 22:49:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 22:49:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 488 transitions. [2024-01-29 22:49:49,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8215488215488216 [2024-01-29 22:49:49,548 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 225 flow. Second operand 6 states and 488 transitions. [2024-01-29 22:49:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 181 transitions, 795 flow [2024-01-29 22:49:49,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 181 transitions, 789 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:49,552 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 263 flow [2024-01-29 22:49:49,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-01-29 22:49:49,552 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2024-01-29 22:49:49,552 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 263 flow [2024-01-29 22:49:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:49,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:49,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-29 22:49:49,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:49,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:49,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 235535351, now seen corresponding path program 1 times [2024-01-29 22:49:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904428115] [2024-01-29 22:49:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904428115] [2024-01-29 22:49:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904428115] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:49:49,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995142647] [2024-01-29 22:49:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:49,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:49,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:49:49,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 22:49:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:50,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 22:49:50,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:49:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:50,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:49:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:50,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995142647] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:49:50,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:49:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-29 22:49:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373562126] [2024-01-29 22:49:50,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:49:50,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-29 22:49:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-29 22:49:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-29 22:49:50,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2024-01-29 22:49:50,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 263 flow. Second operand has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:50,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:50,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2024-01-29 22:49:50,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:51,334 INFO L124 PetriNetUnfolderBase]: 3777/7000 cut-off events. [2024-01-29 22:49:51,334 INFO L125 PetriNetUnfolderBase]: For 2273/2504 co-relation queries the response was YES. [2024-01-29 22:49:51,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15760 conditions, 7000 events. 3777/7000 cut-off events. For 2273/2504 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 46350 event pairs, 51 based on Foata normal form. 609/7330 useless extension candidates. Maximal degree in co-relation 15745. Up to 1447 conditions per place. [2024-01-29 22:49:51,366 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 192 selfloop transitions, 7 changer transitions 0/228 dead transitions. [2024-01-29 22:49:51,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 228 transitions, 1067 flow [2024-01-29 22:49:51,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 22:49:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 22:49:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 521 transitions. [2024-01-29 22:49:51,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578282828282829 [2024-01-29 22:49:51,368 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 263 flow. Second operand 8 states and 521 transitions. [2024-01-29 22:49:51,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 228 transitions, 1067 flow [2024-01-29 22:49:51,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 228 transitions, 1057 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:51,374 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 247 flow [2024-01-29 22:49:51,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-01-29 22:49:51,375 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 1 predicate places. [2024-01-29 22:49:51,375 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 247 flow [2024-01-29 22:49:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:51,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:51,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-29 22:49:51,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-01-29 22:49:51,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:51,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:51,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1596690272, now seen corresponding path program 1 times [2024-01-29 22:49:51,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:51,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485373207] [2024-01-29 22:49:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:51,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:51,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485373207] [2024-01-29 22:49:51,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485373207] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:49:51,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740092425] [2024-01-29 22:49:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:51,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:51,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:51,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:49:51,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 22:49:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:51,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 22:49:51,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:49:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:51,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:49:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740092425] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:49:52,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:49:52,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-29 22:49:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076774583] [2024-01-29 22:49:52,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:49:52,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-29 22:49:52,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-29 22:49:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-29 22:49:52,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 99 [2024-01-29 22:49:52,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 44.2) internal successors, (442), 10 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:52,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:52,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 99 [2024-01-29 22:49:52,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:53,520 INFO L124 PetriNetUnfolderBase]: 6795/13248 cut-off events. [2024-01-29 22:49:53,520 INFO L125 PetriNetUnfolderBase]: For 6509/6509 co-relation queries the response was YES. [2024-01-29 22:49:53,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29042 conditions, 13248 events. 6795/13248 cut-off events. For 6509/6509 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 96360 event pairs, 631 based on Foata normal form. 1218/13468 useless extension candidates. Maximal degree in co-relation 29027. Up to 2840 conditions per place. [2024-01-29 22:49:53,606 INFO L140 encePairwiseOnDemand]: 88/99 looper letters, 179 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2024-01-29 22:49:53,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 210 transitions, 1127 flow [2024-01-29 22:49:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 22:49:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 22:49:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 498 transitions. [2024-01-29 22:49:53,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2024-01-29 22:49:53,608 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 247 flow. Second operand 8 states and 498 transitions. [2024-01-29 22:49:53,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 210 transitions, 1127 flow [2024-01-29 22:49:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 210 transitions, 1046 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-29 22:49:53,615 INFO L231 Difference]: Finished difference. Result has 96 places, 75 transitions, 249 flow [2024-01-29 22:49:53,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=96, PETRI_TRANSITIONS=75} [2024-01-29 22:49:53,616 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -1 predicate places. [2024-01-29 22:49:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 75 transitions, 249 flow [2024-01-29 22:49:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.2) internal successors, (442), 10 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:53,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:53,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:53,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-29 22:49:53,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:53,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:53,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1475985080, now seen corresponding path program 1 times [2024-01-29 22:49:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488591448] [2024-01-29 22:49:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:53,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:53,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:53,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488591448] [2024-01-29 22:49:53,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488591448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:53,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:53,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:53,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879973239] [2024-01-29 22:49:53,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:53,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:53,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:53,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2024-01-29 22:49:53,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 75 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:53,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:53,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2024-01-29 22:49:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:54,347 INFO L124 PetriNetUnfolderBase]: 1601/5320 cut-off events. [2024-01-29 22:49:54,348 INFO L125 PetriNetUnfolderBase]: For 3847/3878 co-relation queries the response was YES. [2024-01-29 22:49:54,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10713 conditions, 5320 events. 1601/5320 cut-off events. For 3847/3878 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 37028 event pairs, 429 based on Foata normal form. 319/5417 useless extension candidates. Maximal degree in co-relation 10695. Up to 2010 conditions per place. [2024-01-29 22:49:54,380 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 52 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-01-29 22:49:54,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 463 flow [2024-01-29 22:49:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:54,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-01-29 22:49:54,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-01-29 22:49:54,382 INFO L175 Difference]: Start difference. First operand has 96 places, 75 transitions, 249 flow. Second operand 3 states and 242 transitions. [2024-01-29 22:49:54,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 463 flow [2024-01-29 22:49:54,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 443 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:54,386 INFO L231 Difference]: Finished difference. Result has 95 places, 75 transitions, 246 flow [2024-01-29 22:49:54,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=95, PETRI_TRANSITIONS=75} [2024-01-29 22:49:54,387 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -2 predicate places. [2024-01-29 22:49:54,387 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 75 transitions, 246 flow [2024-01-29 22:49:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:54,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:54,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:54,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 22:49:54,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:54,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -495437668, now seen corresponding path program 1 times [2024-01-29 22:49:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663065462] [2024-01-29 22:49:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663065462] [2024-01-29 22:49:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663065462] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:49:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412101629] [2024-01-29 22:49:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:54,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:54,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:54,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:49:54,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-29 22:49:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:54,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2024-01-29 22:49:54,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:49:54,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-29 22:49:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:54,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:49:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412101629] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:49:54,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:49:54,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-01-29 22:49:54,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604764688] [2024-01-29 22:49:54,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:49:54,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-29 22:49:54,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-29 22:49:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-29 22:49:54,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:49:54,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 75 transitions, 246 flow. Second operand has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:54,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:54,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:49:54,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:56,391 INFO L124 PetriNetUnfolderBase]: 4997/15852 cut-off events. [2024-01-29 22:49:56,392 INFO L125 PetriNetUnfolderBase]: For 12156/12195 co-relation queries the response was YES. [2024-01-29 22:49:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33747 conditions, 15852 events. 4997/15852 cut-off events. For 12156/12195 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 149243 event pairs, 995 based on Foata normal form. 153/15322 useless extension candidates. Maximal degree in co-relation 33729. Up to 1911 conditions per place. [2024-01-29 22:49:56,483 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 203 selfloop transitions, 19 changer transitions 0/258 dead transitions. [2024-01-29 22:49:56,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 258 transitions, 1505 flow [2024-01-29 22:49:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-29 22:49:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-29 22:49:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 948 transitions. [2024-01-29 22:49:56,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.797979797979798 [2024-01-29 22:49:56,486 INFO L175 Difference]: Start difference. First operand has 95 places, 75 transitions, 246 flow. Second operand 12 states and 948 transitions. [2024-01-29 22:49:56,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 258 transitions, 1505 flow [2024-01-29 22:49:56,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 258 transitions, 1483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:56,512 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 376 flow [2024-01-29 22:49:56,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=376, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-01-29 22:49:56,512 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 14 predicate places. [2024-01-29 22:49:56,513 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 376 flow [2024-01-29 22:49:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:56,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:56,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:56,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-29 22:49:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:49:56,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:56,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1654823187, now seen corresponding path program 1 times [2024-01-29 22:49:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:56,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307982285] [2024-01-29 22:49:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307982285] [2024-01-29 22:49:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307982285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:57,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-29 22:49:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683474083] [2024-01-29 22:49:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 22:49:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 22:49:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-29 22:49:57,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:49:57,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:57,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:57,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:49:57,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:59,486 INFO L124 PetriNetUnfolderBase]: 4879/15324 cut-off events. [2024-01-29 22:49:59,487 INFO L125 PetriNetUnfolderBase]: For 16001/16040 co-relation queries the response was YES. [2024-01-29 22:49:59,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34203 conditions, 15324 events. 4879/15324 cut-off events. For 16001/16040 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 142937 event pairs, 1655 based on Foata normal form. 55/14571 useless extension candidates. Maximal degree in co-relation 34177. Up to 7333 conditions per place. [2024-01-29 22:49:59,560 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 111 selfloop transitions, 7 changer transitions 0/154 dead transitions. [2024-01-29 22:49:59,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 884 flow [2024-01-29 22:49:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-29 22:49:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-29 22:49:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 534 transitions. [2024-01-29 22:49:59,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7705627705627706 [2024-01-29 22:49:59,562 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 376 flow. Second operand 7 states and 534 transitions. [2024-01-29 22:49:59,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 884 flow [2024-01-29 22:49:59,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 154 transitions, 870 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:59,588 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 423 flow [2024-01-29 22:49:59,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2024-01-29 22:49:59,589 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 23 predicate places. [2024-01-29 22:49:59,589 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 423 flow [2024-01-29 22:49:59,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:49:59,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:59,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:59,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 22:49:59,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:49:59,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1245009080, now seen corresponding path program 1 times [2024-01-29 22:49:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212085475] [2024-01-29 22:49:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212085475] [2024-01-29 22:50:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212085475] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:50:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597075802] [2024-01-29 22:50:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:00,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:50:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:50:00,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:50:00,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-29 22:50:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:00,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-29 22:50:00,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:50:00,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-29 22:50:00,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-01-29 22:50:00,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-01-29 22:50:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:00,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:50:01,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2024-01-29 22:50:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597075802] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:50:01,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:50:01,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-01-29 22:50:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184551454] [2024-01-29 22:50:01,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:50:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-29 22:50:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-29 22:50:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-01-29 22:50:01,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:50:01,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 423 flow. Second operand has 20 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:01,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:01,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:50:01,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:08,201 INFO L124 PetriNetUnfolderBase]: 9841/30226 cut-off events. [2024-01-29 22:50:08,202 INFO L125 PetriNetUnfolderBase]: For 35140/35179 co-relation queries the response was YES. [2024-01-29 22:50:08,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69652 conditions, 30226 events. 9841/30226 cut-off events. For 35140/35179 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 315960 event pairs, 1099 based on Foata normal form. 59/29369 useless extension candidates. Maximal degree in co-relation 69621. Up to 3520 conditions per place. [2024-01-29 22:50:08,623 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 664 selfloop transitions, 111 changer transitions 0/811 dead transitions. [2024-01-29 22:50:08,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 811 transitions, 5412 flow [2024-01-29 22:50:08,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-01-29 22:50:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-01-29 22:50:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4654 transitions. [2024-01-29 22:50:08,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7461920795254129 [2024-01-29 22:50:08,652 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 423 flow. Second operand 63 states and 4654 transitions. [2024-01-29 22:50:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 811 transitions, 5412 flow [2024-01-29 22:50:08,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 811 transitions, 5409 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:50:08,886 INFO L231 Difference]: Finished difference. Result has 188 places, 204 transitions, 1219 flow [2024-01-29 22:50:08,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1219, PETRI_PLACES=188, PETRI_TRANSITIONS=204} [2024-01-29 22:50:08,888 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 91 predicate places. [2024-01-29 22:50:08,888 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 204 transitions, 1219 flow [2024-01-29 22:50:08,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 67.75) internal successors, (1355), 20 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:08,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:08,889 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:08,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-01-29 22:50:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-29 22:50:09,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:50:09,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:09,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1399551383, now seen corresponding path program 2 times [2024-01-29 22:50:09,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159953870] [2024-01-29 22:50:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-01-29 22:50:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:09,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159953870] [2024-01-29 22:50:09,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159953870] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:50:09,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:50:09,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:50:09,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271803873] [2024-01-29 22:50:09,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:50:09,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 22:50:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 22:50:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-29 22:50:09,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2024-01-29 22:50:09,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 204 transitions, 1219 flow. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:09,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:09,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2024-01-29 22:50:09,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:16,644 INFO L124 PetriNetUnfolderBase]: 23555/52710 cut-off events. [2024-01-29 22:50:16,644 INFO L125 PetriNetUnfolderBase]: For 66980/67079 co-relation queries the response was YES. [2024-01-29 22:50:17,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136068 conditions, 52710 events. 23555/52710 cut-off events. For 66980/67079 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 509897 event pairs, 6421 based on Foata normal form. 99/51793 useless extension candidates. Maximal degree in co-relation 136029. Up to 25305 conditions per place. [2024-01-29 22:50:17,488 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 402 selfloop transitions, 9 changer transitions 3/467 dead transitions. [2024-01-29 22:50:17,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 467 transitions, 3677 flow [2024-01-29 22:50:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 22:50:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 22:50:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 365 transitions. [2024-01-29 22:50:17,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6144781144781145 [2024-01-29 22:50:17,490 INFO L175 Difference]: Start difference. First operand has 188 places, 204 transitions, 1219 flow. Second operand 6 states and 365 transitions. [2024-01-29 22:50:17,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 467 transitions, 3677 flow [2024-01-29 22:50:17,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 467 transitions, 3153 flow, removed 230 selfloop flow, removed 8 redundant places. [2024-01-29 22:50:17,710 INFO L231 Difference]: Finished difference. Result has 183 places, 203 transitions, 1003 flow [2024-01-29 22:50:17,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1003, PETRI_PLACES=183, PETRI_TRANSITIONS=203} [2024-01-29 22:50:17,710 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 86 predicate places. [2024-01-29 22:50:17,711 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 203 transitions, 1003 flow [2024-01-29 22:50:17,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:17,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:17,711 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:17,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-29 22:50:17,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:50:17,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1168020649, now seen corresponding path program 1 times [2024-01-29 22:50:17,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:17,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143401676] [2024-01-29 22:50:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:17,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:18,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:18,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143401676] [2024-01-29 22:50:18,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143401676] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:50:18,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007771152] [2024-01-29 22:50:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:18,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:50:18,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:50:18,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:50:18,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-29 22:50:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:18,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 16 conjunts are in the unsatisfiable core [2024-01-29 22:50:18,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:50:18,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-01-29 22:50:19,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2024-01-29 22:50:19,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2024-01-29 22:50:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:19,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:50:20,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-29 22:50:20,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 12 [2024-01-29 22:50:20,143 INFO L349 Elim1Store]: treesize reduction 8, result has 70.4 percent of original size [2024-01-29 22:50:20,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 111 [2024-01-29 22:50:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007771152] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:50:20,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:50:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2024-01-29 22:50:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110116084] [2024-01-29 22:50:20,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:50:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-01-29 22:50:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-01-29 22:50:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2024-01-29 22:50:20,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:50:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 203 transitions, 1003 flow. Second operand has 24 states, 24 states have (on average 67.875) internal successors, (1629), 24 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:20,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:50:20,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:31,847 INFO L124 PetriNetUnfolderBase]: 19855/59820 cut-off events. [2024-01-29 22:50:31,847 INFO L125 PetriNetUnfolderBase]: For 104979/105018 co-relation queries the response was YES. [2024-01-29 22:50:32,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148108 conditions, 59820 events. 19855/59820 cut-off events. For 104979/105018 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 666810 event pairs, 2451 based on Foata normal form. 583/59174 useless extension candidates. Maximal degree in co-relation 148073. Up to 6914 conditions per place. [2024-01-29 22:50:32,604 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 725 selfloop transitions, 275 changer transitions 58/1093 dead transitions. [2024-01-29 22:50:32,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1093 transitions, 7889 flow [2024-01-29 22:50:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-01-29 22:50:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-01-29 22:50:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4475 transitions. [2024-01-29 22:50:32,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7661359356274611 [2024-01-29 22:50:32,635 INFO L175 Difference]: Start difference. First operand has 183 places, 203 transitions, 1003 flow. Second operand 59 states and 4475 transitions. [2024-01-29 22:50:32,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1093 transitions, 7889 flow [2024-01-29 22:50:33,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1093 transitions, 7538 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-01-29 22:50:33,089 INFO L231 Difference]: Finished difference. Result has 250 places, 395 transitions, 2906 flow [2024-01-29 22:50:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=2906, PETRI_PLACES=250, PETRI_TRANSITIONS=395} [2024-01-29 22:50:33,089 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 153 predicate places. [2024-01-29 22:50:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 395 transitions, 2906 flow [2024-01-29 22:50:33,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 67.875) internal successors, (1629), 24 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:33,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:33,096 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:33,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-29 22:50:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-29 22:50:33,308 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:50:33,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash -760727269, now seen corresponding path program 1 times [2024-01-29 22:50:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739362661] [2024-01-29 22:50:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-01-29 22:50:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739362661] [2024-01-29 22:50:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739362661] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 22:50:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816258074] [2024-01-29 22:50:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:33,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:50:33,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:50:33,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 22:50:33,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-29 22:50:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:34,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-29 22:50:34,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 22:50:34,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-29 22:50:34,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-01-29 22:50:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:34,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 22:50:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-01-29 22:50:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816258074] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 22:50:34,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 22:50:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-01-29 22:50:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16747340] [2024-01-29 22:50:34,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 22:50:34,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-29 22:50:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-29 22:50:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-01-29 22:50:34,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 99 [2024-01-29 22:50:34,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 395 transitions, 2906 flow. Second operand has 14 states, 14 states have (on average 70.28571428571429) internal successors, (984), 14 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:34,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:34,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 99 [2024-01-29 22:50:34,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:48,745 INFO L124 PetriNetUnfolderBase]: 24607/74632 cut-off events. [2024-01-29 22:50:48,746 INFO L125 PetriNetUnfolderBase]: For 162654/162693 co-relation queries the response was YES. [2024-01-29 22:50:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195851 conditions, 74632 events. 24607/74632 cut-off events. For 162654/162693 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 856192 event pairs, 3779 based on Foata normal form. 495/73408 useless extension candidates. Maximal degree in co-relation 195791. Up to 8478 conditions per place. [2024-01-29 22:50:50,137 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 585 selfloop transitions, 203 changer transitions 15/838 dead transitions. [2024-01-29 22:50:50,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 838 transitions, 7267 flow [2024-01-29 22:50:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-01-29 22:50:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-01-29 22:50:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1879 transitions. [2024-01-29 22:50:50,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7908249158249159 [2024-01-29 22:50:50,155 INFO L175 Difference]: Start difference. First operand has 250 places, 395 transitions, 2906 flow. Second operand 24 states and 1879 transitions. [2024-01-29 22:50:50,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 838 transitions, 7267 flow [2024-01-29 22:50:51,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 838 transitions, 7177 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-01-29 22:50:51,402 INFO L231 Difference]: Finished difference. Result has 282 places, 458 transitions, 4114 flow [2024-01-29 22:50:51,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4114, PETRI_PLACES=282, PETRI_TRANSITIONS=458} [2024-01-29 22:50:51,403 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 185 predicate places. [2024-01-29 22:50:51,403 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 458 transitions, 4114 flow [2024-01-29 22:50:51,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 70.28571428571429) internal successors, (984), 14 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:51,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:51,404 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:51,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-29 22:50:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 22:50:51,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err15ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 65 more)] === [2024-01-29 22:50:51,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -960792602, now seen corresponding path program 1 times [2024-01-29 22:50:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415507929] [2024-01-29 22:50:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-01-29 22:50:51,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:51,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415507929] [2024-01-29 22:50:51,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415507929] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:50:51,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:50:51,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:50:51,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985791920] [2024-01-29 22:50:51,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:50:51,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 22:50:51,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:51,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 22:50:51,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-29 22:50:51,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2024-01-29 22:50:51,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 458 transitions, 4114 flow. Second operand has 6 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 22:50:51,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:51,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2024-01-29 22:50:51,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand