./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-2.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/stateful01-2.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/stateful01-2.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/stateful01-2.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 22:49:51,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 22:49:51,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 22:49:51,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 22:49:51,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 22:49:51,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 22:49:51,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 22:49:51,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 22:49:51,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 22:49:51,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 22:49:51,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 22:49:51,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 22:49:51,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 22:49:51,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 22:49:51,661 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 22:49:51,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 22:49:51,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 22:49:51,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 22:49:51,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 22:49:51,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 22:49:51,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 22:49:51,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 22:49:51,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 22:49:51,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 22:49:51,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 22:49:51,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 22:49:51,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 22:49:51,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 22:49:51,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 22:49:51,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 22:49:51,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 22:49:51,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 22:49:51,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:49:51,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 22:49:51,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 22:49:51,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 22:49:51,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 22:49:51,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 22:49:51,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 22:49:51,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 22:49:51,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 22:49:51,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 22:49:51,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 22:49:51,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 22:49:51,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 22:49:51,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 22:49:51,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 22:49:51,922 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 22:49:51,922 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 22:49:51,923 INFO L431 ainManager$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/stateful01-2.yml/witness.yml [2024-01-29 22:49:52,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 22:49:52,009 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 22:49:52,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2024-01-29 22:49:53,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 22:49:53,588 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 22:49:53,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2024-01-29 22:49:53,599 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d738ce05a/0dd5d90287ad453184b78e9ad193dabf/FLAGabeedc0fd [2024-01-29 22:49:53,614 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d738ce05a/0dd5d90287ad453184b78e9ad193dabf [2024-01-29 22:49:53,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 22:49:53,615 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 22:49:53,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 22:49:53,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 22:49:53,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 22:49:53,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:52" (1/2) ... [2024-01-29 22:49:53,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e6c22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:53, skipping insertion in model container [2024-01-29 22:49:53,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:52" (1/2) ... [2024-01-29 22:49:53,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c22b882 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 10:49:53, skipping insertion in model container [2024-01-29 22:49:53,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:49:53" (2/2) ... [2024-01-29 22:49:53,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8e6c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:53, skipping insertion in model container [2024-01-29 22:49:53,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:49:53" (2/2) ... [2024-01-29 22:49:53,627 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 22:49:53,669 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 22:49:53,670 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (unsigned long )arg == 0UL [2024-01-29 22:49:53,670 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (10 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 10 <= data1 [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (data1 == 0) && (data2 == 0) [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] data1 == 0 [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] 10 <= data1 [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (10 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L699-L699] (unsigned long )arg == 0UL [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (data1 == 0) && (data2 == 0) [2024-01-29 22:49:53,671 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] data1 == 0 [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] 15 <= data1 [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (15 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] 10 <= data1 [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (10 <= data1) && (data2 <= 2147483641) [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L711-L711] (10 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,672 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L712] (unsigned long )arg == 0UL [2024-01-29 22:49:53,673 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (data1 == 10) && (data2 == 0) [2024-01-29 22:49:53,673 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] data1 == 10 [2024-01-29 22:49:53,673 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] 10 <= data1 [2024-01-29 22:49:53,673 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (10 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (11 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] 11 <= data1 [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] data1 == 0 [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (data1 == 0) && (data2 == 0) [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] 10 <= data1 [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (10 <= data1) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,674 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (data1 == 10) && (data2 == 10) [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] data1 == 10 [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (unsigned long )arg == 0UL [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] (unsigned long )arg == 0UL [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] -2147483647 <= data2 [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (-2147483647 <= data2) && ((unsigned long )arg == 0UL) [2024-01-29 22:49:53,675 INFO L98 nessWitnessExtractor]: Location invariant before [L701-L701] (-2147483647 <= data2) && (10 <= data1) [2024-01-29 22:49:53,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 22:49:54,023 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/stateful01-2.i[30826,30839] [2024-01-29 22:49:54,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:49:54,039 INFO L202 MainTranslator]: Completed pre-run 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 22:49:54,121 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/stateful01-2.i[30826,30839] [2024-01-29 22:49:54,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 22:49:54,150 INFO L206 MainTranslator]: Completed translation [2024-01-29 22:49:54,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54 WrapperNode [2024-01-29 22:49:54,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 22:49:54,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 22:49:54,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 22:49:54,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 22:49:54,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,195 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2024-01-29 22:49:54,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 22:49:54,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 22:49:54,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 22:49:54,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 22:49:54,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,219 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 5, 2, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2024-01-29 22:49:54,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,227 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 22:49:54,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 22:49:54,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 22:49:54,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 22:49:54,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (1/1) ... [2024-01-29 22:49:54,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 22:49:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 22:49:54,288 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 22:49:54,293 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 22:49:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 22:49:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 22:49:54,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 22:49:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 22:49:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 22:49:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 22:49:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 22:49:54,332 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 22:49:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 22:49:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 22:49:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 22:49:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 22:49:54,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 22:49:54,336 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 22:49:54,443 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 22:49:54,445 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 22:49:54,698 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 22:49:54,698 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 22:49:54,784 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 22:49:54,784 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 22:49:54,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:49:54 BoogieIcfgContainer [2024-01-29 22:49:54,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 22:49:54,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 22:49:54,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 22:49:54,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 22:49:54,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 10:49:52" (1/4) ... [2024-01-29 22:49:54,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d3c924 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 10:49:54, skipping insertion in model container [2024-01-29 22:49:54,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:49:53" (2/4) ... [2024-01-29 22:49:54,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d3c924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:49:54, skipping insertion in model container [2024-01-29 22:49:54,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:49:54" (3/4) ... [2024-01-29 22:49:54,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d3c924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:49:54, skipping insertion in model container [2024-01-29 22:49:54,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:49:54" (4/4) ... [2024-01-29 22:49:54,797 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2024-01-29 22:49:54,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 22:49:54,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2024-01-29 22:49:54,811 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 22:49:54,867 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 22:49:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 102 transitions, 218 flow [2024-01-29 22:49:54,941 INFO L124 PetriNetUnfolderBase]: 1/100 cut-off events. [2024-01-29 22:49:54,941 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 22:49:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 1/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-01-29 22:49:54,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 102 transitions, 218 flow [2024-01-29 22:49:54,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 97 transitions, 206 flow [2024-01-29 22:49:54,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 22:49:54,967 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;@1f9a766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 22:49:54,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-29 22:49:54,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 22:49:54,969 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 22:49:54,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 22:49:54,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:54,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 22:49:54,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:54,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash 9952, now seen corresponding path program 1 times [2024-01-29 22:49:54,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:54,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578822787] [2024-01-29 22:49:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:54,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:55,151 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 22:49:55,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:55,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578822787] [2024-01-29 22:49:55,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578822787] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:55,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:55,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:49:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394521473] [2024-01-29 22:49:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:55,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:55,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-01-29 22:49:55,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 97 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 22:49:55,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:55,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-01-29 22:49:55,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:55,638 INFO L124 PetriNetUnfolderBase]: 582/1562 cut-off events. [2024-01-29 22:49:55,639 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-29 22:49:55,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 1562 events. 582/1562 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9936 event pairs, 582 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 2476. Up to 1035 conditions per place. [2024-01-29 22:49:55,651 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 42 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-01-29 22:49:55,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 288 flow [2024-01-29 22:49:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2024-01-29 22:49:55,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2024-01-29 22:49:55,662 INFO L175 Difference]: Start difference. First operand has 104 places, 97 transitions, 206 flow. Second operand 3 states and 206 transitions. [2024-01-29 22:49:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 288 flow [2024-01-29 22:49:55,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-29 22:49:55,668 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 196 flow [2024-01-29 22:49:55,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-01-29 22:49:55,672 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -5 predicate places. [2024-01-29 22:49:55,672 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 196 flow [2024-01-29 22:49:55,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 22:49:55,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:55,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-29 22:49:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 22:49:55,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:55,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash 308815, now seen corresponding path program 1 times [2024-01-29 22:49:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686619033] [2024-01-29 22:49:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686619033] [2024-01-29 22:49:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686619033] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:55,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 22:49:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917051478] [2024-01-29 22:49:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:55,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:55,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 102 [2024-01-29 22:49:55,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 22:49:55,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:55,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 102 [2024-01-29 22:49:55,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:55,987 INFO L124 PetriNetUnfolderBase]: 627/1626 cut-off events. [2024-01-29 22:49:55,988 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-29 22:49:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1626 events. 627/1626 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10273 event pairs, 627 based on Foata normal form. 1/1547 useless extension candidates. Maximal degree in co-relation 2744. Up to 1112 conditions per place. [2024-01-29 22:49:55,996 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 41 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-29 22:49:55,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 276 flow [2024-01-29 22:49:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2024-01-29 22:49:55,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-01-29 22:49:55,998 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 196 flow. Second operand 3 states and 196 transitions. [2024-01-29 22:49:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 276 flow [2024-01-29 22:49:55,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:56,000 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 190 flow [2024-01-29 22:49:56,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-01-29 22:49:56,001 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -8 predicate places. [2024-01-29 22:49:56,001 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 190 flow [2024-01-29 22:49:56,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 22:49:56,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:56,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:56,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 22:49:56,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:56,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1884864004, now seen corresponding path program 1 times [2024-01-29 22:49:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480586186] [2024-01-29 22:49:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480586186] [2024-01-29 22:49:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480586186] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:56,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:49:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466812412] [2024-01-29 22:49:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:56,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-01-29 22:49:56,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 22:49:56,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:56,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-01-29 22:49:56,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:56,233 INFO L124 PetriNetUnfolderBase]: 448/1289 cut-off events. [2024-01-29 22:49:56,233 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-01-29 22:49:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1289 events. 448/1289 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8637 event pairs, 223 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 2097. Up to 787 conditions per place. [2024-01-29 22:49:56,241 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 45 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-01-29 22:49:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 297 flow [2024-01-29 22:49:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2024-01-29 22:49:56,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7287581699346405 [2024-01-29 22:49:56,244 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 190 flow. Second operand 3 states and 223 transitions. [2024-01-29 22:49:56,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 297 flow [2024-01-29 22:49:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:56,246 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 203 flow [2024-01-29 22:49:56,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-01-29 22:49:56,246 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -9 predicate places. [2024-01-29 22:49:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 203 flow [2024-01-29 22:49:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 22:49:56,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 22:49:56,247 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1698758338, now seen corresponding path program 1 times [2024-01-29 22:49:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102159730] [2024-01-29 22:49:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:56,308 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 22:49:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102159730] [2024-01-29 22:49:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102159730] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:56,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 22:49:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370146127] [2024-01-29 22:49:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:56,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2024-01-29 22:49:56,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 22:49:56,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:56,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2024-01-29 22:49:56,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:56,557 INFO L124 PetriNetUnfolderBase]: 568/1500 cut-off events. [2024-01-29 22:49:56,557 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-01-29 22:49:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1500 events. 568/1500 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 10125 event pairs, 546 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 2104. Up to 1009 conditions per place. [2024-01-29 22:49:56,564 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 43 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-01-29 22:49:56,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 293 flow [2024-01-29 22:49:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-01-29 22:49:56,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6200980392156863 [2024-01-29 22:49:56,567 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 203 flow. Second operand 4 states and 253 transitions. [2024-01-29 22:49:56,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 293 flow [2024-01-29 22:49:56,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:56,570 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 204 flow [2024-01-29 22:49:56,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-01-29 22:49:56,574 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -8 predicate places. [2024-01-29 22:49:56,574 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 204 flow [2024-01-29 22:49:56,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 22:49:56,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:56,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:56,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 22:49:56,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:56,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 419201516, now seen corresponding path program 1 times [2024-01-29 22:49:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:56,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202482050] [2024-01-29 22:49:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:56,645 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 22:49:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202482050] [2024-01-29 22:49:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202482050] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649733100] [2024-01-29 22:49:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:56,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2024-01-29 22:49:56,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 22:49:56,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:56,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2024-01-29 22:49:56,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:56,851 INFO L124 PetriNetUnfolderBase]: 568/1479 cut-off events. [2024-01-29 22:49:56,851 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-01-29 22:49:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 1479 events. 568/1479 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9910 event pairs, 291 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 2593. Up to 993 conditions per place. [2024-01-29 22:49:56,858 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 47 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-01-29 22:49:56,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 315 flow [2024-01-29 22:49:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-01-29 22:49:56,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-01-29 22:49:56,859 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 204 flow. Second operand 4 states and 260 transitions. [2024-01-29 22:49:56,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 315 flow [2024-01-29 22:49:56,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 309 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:56,862 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 204 flow [2024-01-29 22:49:56,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-01-29 22:49:56,864 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -9 predicate places. [2024-01-29 22:49:56,865 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 204 flow [2024-01-29 22:49:56,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 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 22:49:56,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:56,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:56,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 22:49:56,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:56,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:56,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1332084932, now seen corresponding path program 1 times [2024-01-29 22:49:56,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:56,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912742114] [2024-01-29 22:49:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:56,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:56,973 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 22:49:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912742114] [2024-01-29 22:49:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912742114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468480763] [2024-01-29 22:49:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:56,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:56,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-01-29 22:49:56,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 22:49:56,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:56,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-01-29 22:49:56,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:57,097 INFO L124 PetriNetUnfolderBase]: 213/847 cut-off events. [2024-01-29 22:49:57,098 INFO L125 PetriNetUnfolderBase]: For 70/82 co-relation queries the response was YES. [2024-01-29 22:49:57,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 847 events. 213/847 cut-off events. For 70/82 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5415 event pairs, 79 based on Foata normal form. 36/715 useless extension candidates. Maximal degree in co-relation 495. Up to 367 conditions per place. [2024-01-29 22:49:57,102 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 38 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-29 22:49:57,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 303 flow [2024-01-29 22:49:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2024-01-29 22:49:57,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7769607843137255 [2024-01-29 22:49:57,104 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 204 flow. Second operand 4 states and 317 transitions. [2024-01-29 22:49:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 303 flow [2024-01-29 22:49:57,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:57,108 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 194 flow [2024-01-29 22:49:57,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-01-29 22:49:57,110 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -12 predicate places. [2024-01-29 22:49:57,111 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 194 flow [2024-01-29 22:49:57,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 22:49:57,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:57,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 22:49:57,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:57,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -234538837, now seen corresponding path program 1 times [2024-01-29 22:49:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:57,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003948844] [2024-01-29 22:49:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:57,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003948844] [2024-01-29 22:49:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003948844] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:57,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:57,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953299924] [2024-01-29 22:49:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:57,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 102 [2024-01-29 22:49:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 22:49:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 102 [2024-01-29 22:49:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:57,314 INFO L124 PetriNetUnfolderBase]: 213/828 cut-off events. [2024-01-29 22:49:57,314 INFO L125 PetriNetUnfolderBase]: For 41/63 co-relation queries the response was YES. [2024-01-29 22:49:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 828 events. 213/828 cut-off events. For 41/63 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5275 event pairs, 100 based on Foata normal form. 36/705 useless extension candidates. Maximal degree in co-relation 1256. Up to 337 conditions per place. [2024-01-29 22:49:57,318 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 45 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-01-29 22:49:57,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 100 transitions, 321 flow [2024-01-29 22:49:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2024-01-29 22:49:57,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2024-01-29 22:49:57,322 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 194 flow. Second operand 4 states and 324 transitions. [2024-01-29 22:49:57,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 100 transitions, 321 flow [2024-01-29 22:49:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:57,324 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 189 flow [2024-01-29 22:49:57,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=189, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-01-29 22:49:57,325 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -14 predicate places. [2024-01-29 22:49:57,325 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 189 flow [2024-01-29 22:49:57,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 22:49:57,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:57,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:57,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 22:49:57,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:57,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:57,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1355993132, now seen corresponding path program 1 times [2024-01-29 22:49:57,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:57,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633100231] [2024-01-29 22:49:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:57,392 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 22:49:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633100231] [2024-01-29 22:49:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633100231] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:57,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:57,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366646905] [2024-01-29 22:49:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:57,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 102 [2024-01-29 22:49:57,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 22:49:57,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:57,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 102 [2024-01-29 22:49:57,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:57,625 INFO L124 PetriNetUnfolderBase]: 762/1715 cut-off events. [2024-01-29 22:49:57,625 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-01-29 22:49:57,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 1715 events. 762/1715 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9783 event pairs, 347 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 2889. Up to 1214 conditions per place. [2024-01-29 22:49:57,632 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 65 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-01-29 22:49:57,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 344 flow [2024-01-29 22:49:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-01-29 22:49:57,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5931372549019608 [2024-01-29 22:49:57,633 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 189 flow. Second operand 4 states and 242 transitions. [2024-01-29 22:49:57,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 344 flow [2024-01-29 22:49:57,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:57,635 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 172 flow [2024-01-29 22:49:57,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=81, 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=172, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-01-29 22:49:57,637 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -20 predicate places. [2024-01-29 22:49:57,637 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 172 flow [2024-01-29 22:49:57,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 22:49:57,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:57,639 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 22:49:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 22:49:57,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:57,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash 765717598, now seen corresponding path program 1 times [2024-01-29 22:49:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:57,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028444568] [2024-01-29 22:49:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:57,689 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 22:49:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028444568] [2024-01-29 22:49:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028444568] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:57,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036930424] [2024-01-29 22:49:57,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:57,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:57,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 102 [2024-01-29 22:49:57,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 22:49:57,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:57,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 102 [2024-01-29 22:49:57,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:57,903 INFO L124 PetriNetUnfolderBase]: 699/1509 cut-off events. [2024-01-29 22:49:57,903 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-01-29 22:49:57,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 1509 events. 699/1509 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8345 event pairs, 75 based on Foata normal form. 0/1490 useless extension candidates. Maximal degree in co-relation 2833. Up to 1073 conditions per place. [2024-01-29 22:49:57,909 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 62 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-01-29 22:49:57,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 327 flow [2024-01-29 22:49:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-01-29 22:49:57,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571078431372549 [2024-01-29 22:49:57,911 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 172 flow. Second operand 4 states and 233 transitions. [2024-01-29 22:49:57,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 327 flow [2024-01-29 22:49:57,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:57,912 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 167 flow [2024-01-29 22:49:57,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-01-29 22:49:57,913 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -22 predicate places. [2024-01-29 22:49:57,913 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 167 flow [2024-01-29 22:49:57,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 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 22:49:57,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:57,914 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 22:49:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 22:49:57,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:57,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1734321806, now seen corresponding path program 1 times [2024-01-29 22:49:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:57,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868512048] [2024-01-29 22:49:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:57,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:57,981 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 22:49:57,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:57,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868512048] [2024-01-29 22:49:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868512048] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:57,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125594977] [2024-01-29 22:49:57,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:57,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:58,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 102 [2024-01-29 22:49:58,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 22:49:58,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:58,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 102 [2024-01-29 22:49:58,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:58,132 INFO L124 PetriNetUnfolderBase]: 582/1349 cut-off events. [2024-01-29 22:49:58,133 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-01-29 22:49:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 1349 events. 582/1349 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7673 event pairs, 260 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 2444. Up to 985 conditions per place. [2024-01-29 22:49:58,138 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 50 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-01-29 22:49:58,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 286 flow [2024-01-29 22:49:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-01-29 22:49:58,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-01-29 22:49:58,140 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 167 flow. Second operand 4 states and 246 transitions. [2024-01-29 22:49:58,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 286 flow [2024-01-29 22:49:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:58,141 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 168 flow [2024-01-29 22:49:58,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-01-29 22:49:58,142 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -22 predicate places. [2024-01-29 22:49:58,142 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 168 flow [2024-01-29 22:49:58,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 22:49:58,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:58,142 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] [2024-01-29 22:49:58,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 22:49:58,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:58,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2070598463, now seen corresponding path program 1 times [2024-01-29 22:49:58,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072736132] [2024-01-29 22:49:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:58,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:58,177 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 22:49:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:58,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072736132] [2024-01-29 22:49:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072736132] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:58,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495701847] [2024-01-29 22:49:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:58,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2024-01-29 22:49:58,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 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 22:49:58,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:58,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2024-01-29 22:49:58,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:58,385 INFO L124 PetriNetUnfolderBase]: 543/1412 cut-off events. [2024-01-29 22:49:58,386 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-01-29 22:49:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 1412 events. 543/1412 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8671 event pairs, 215 based on Foata normal form. 0/1318 useless extension candidates. Maximal degree in co-relation 2287. Up to 743 conditions per place. [2024-01-29 22:49:58,392 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 64 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-01-29 22:49:58,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 366 flow [2024-01-29 22:49:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2024-01-29 22:49:58,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-01-29 22:49:58,395 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 168 flow. Second operand 4 states and 254 transitions. [2024-01-29 22:49:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 366 flow [2024-01-29 22:49:58,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 97 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:58,397 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 201 flow [2024-01-29 22:49:58,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-01-29 22:49:58,397 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -21 predicate places. [2024-01-29 22:49:58,397 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 201 flow [2024-01-29 22:49:58,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 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 22:49:58,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:58,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 22:49:58,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1415217760, now seen corresponding path program 1 times [2024-01-29 22:49:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157724315] [2024-01-29 22:49:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:58,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:58,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157724315] [2024-01-29 22:49:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157724315] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:58,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:58,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:49:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348012207] [2024-01-29 22:49:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:58,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:49:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:49:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:49:58,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 102 [2024-01-29 22:49:58,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 22:49:58,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:58,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 102 [2024-01-29 22:49:58,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:58,685 INFO L124 PetriNetUnfolderBase]: 816/1672 cut-off events. [2024-01-29 22:49:58,685 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-01-29 22:49:58,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 1672 events. 816/1672 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9128 event pairs, 115 based on Foata normal form. 68/1719 useless extension candidates. Maximal degree in co-relation 3480. Up to 1067 conditions per place. [2024-01-29 22:49:58,692 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 77 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2024-01-29 22:49:58,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 427 flow [2024-01-29 22:49:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:49:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:49:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-01-29 22:49:58,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-01-29 22:49:58,694 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 201 flow. Second operand 5 states and 274 transitions. [2024-01-29 22:49:58,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 427 flow [2024-01-29 22:49:58,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 102 transitions, 426 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:58,696 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 206 flow [2024-01-29 22:49:58,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-01-29 22:49:58,697 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -20 predicate places. [2024-01-29 22:49:58,697 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 206 flow [2024-01-29 22:49:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 22:49:58,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:58,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:58,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 22:49:58,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:58,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1654249433, now seen corresponding path program 1 times [2024-01-29 22:49:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634443204] [2024-01-29 22:49:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:58,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634443204] [2024-01-29 22:49:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634443204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:58,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:58,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:49:58,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942964440] [2024-01-29 22:49:58,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:58,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:49:58,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:58,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:49:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:49:58,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-01-29 22:49:58,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 22:49:58,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:58,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-01-29 22:49:58,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:58,958 INFO L124 PetriNetUnfolderBase]: 403/1050 cut-off events. [2024-01-29 22:49:58,958 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-01-29 22:49:58,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 1050 events. 403/1050 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5934 event pairs, 63 based on Foata normal form. 32/1045 useless extension candidates. Maximal degree in co-relation 2026. Up to 294 conditions per place. [2024-01-29 22:49:58,963 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 66 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-01-29 22:49:58,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 428 flow [2024-01-29 22:49:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:49:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:49:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-01-29 22:49:58,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-29 22:49:58,965 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 206 flow. Second operand 5 states and 340 transitions. [2024-01-29 22:49:58,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 428 flow [2024-01-29 22:49:58,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:49:58,967 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 230 flow [2024-01-29 22:49:58,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-01-29 22:49:58,967 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -17 predicate places. [2024-01-29 22:49:58,968 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 230 flow [2024-01-29 22:49:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 22:49:58,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:58,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:58,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 22:49:58,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:58,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash 257875542, now seen corresponding path program 1 times [2024-01-29 22:49:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:58,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006502096] [2024-01-29 22:49:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:59,013 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 22:49:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006502096] [2024-01-29 22:49:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006502096] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:59,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:59,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897686143] [2024-01-29 22:49:59,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 22:49:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:59,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 22:49:59,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 22:49:59,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 102 [2024-01-29 22:49:59,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 22:49:59,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:59,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 102 [2024-01-29 22:49:59,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:59,197 INFO L124 PetriNetUnfolderBase]: 522/1256 cut-off events. [2024-01-29 22:49:59,197 INFO L125 PetriNetUnfolderBase]: For 277/287 co-relation queries the response was YES. [2024-01-29 22:49:59,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1256 events. 522/1256 cut-off events. For 277/287 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7268 event pairs, 129 based on Foata normal form. 8/1173 useless extension candidates. Maximal degree in co-relation 2432. Up to 630 conditions per place. [2024-01-29 22:49:59,204 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 66 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2024-01-29 22:49:59,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 437 flow [2024-01-29 22:49:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 22:49:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 22:49:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-01-29 22:49:59,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-01-29 22:49:59,206 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 230 flow. Second operand 4 states and 300 transitions. [2024-01-29 22:49:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 437 flow [2024-01-29 22:49:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 101 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:49:59,208 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 260 flow [2024-01-29 22:49:59,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-01-29 22:49:59,208 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -14 predicate places. [2024-01-29 22:49:59,209 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 260 flow [2024-01-29 22:49:59,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 22:49:59,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:59,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:59,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-29 22:49:59,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:59,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:59,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1586323528, now seen corresponding path program 1 times [2024-01-29 22:49:59,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:59,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236577858] [2024-01-29 22:49:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:59,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:59,268 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 22:49:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236577858] [2024-01-29 22:49:59,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236577858] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 22:49:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024125249] [2024-01-29 22:49:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:59,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:49:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:49:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:49:59,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-01-29 22:49:59,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 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 22:49:59,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:59,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-01-29 22:49:59,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:59,521 INFO L124 PetriNetUnfolderBase]: 384/1057 cut-off events. [2024-01-29 22:49:59,521 INFO L125 PetriNetUnfolderBase]: For 408/414 co-relation queries the response was YES. [2024-01-29 22:49:59,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1057 events. 384/1057 cut-off events. For 408/414 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6242 event pairs, 85 based on Foata normal form. 30/1057 useless extension candidates. Maximal degree in co-relation 2251. Up to 312 conditions per place. [2024-01-29 22:49:59,526 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 69 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2024-01-29 22:49:59,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 509 flow [2024-01-29 22:49:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:49:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:49:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-01-29 22:49:59,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-01-29 22:49:59,528 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 260 flow. Second operand 5 states and 354 transitions. [2024-01-29 22:49:59,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 509 flow [2024-01-29 22:49:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 22:49:59,534 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 318 flow [2024-01-29 22:49:59,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-01-29 22:49:59,535 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -8 predicate places. [2024-01-29 22:49:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 318 flow [2024-01-29 22:49:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 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 22:49:59,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:59,536 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, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:59,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-29 22:49:59,536 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2067778271, now seen corresponding path program 1 times [2024-01-29 22:49:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:59,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239242114] [2024-01-29 22:49:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:59,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:49:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239242114] [2024-01-29 22:49:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239242114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 22:49:59,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080426581] [2024-01-29 22:49:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:59,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 22:49:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 22:49:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 22:49:59,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 102 [2024-01-29 22:49:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 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 22:49:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 102 [2024-01-29 22:49:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:49:59,723 INFO L124 PetriNetUnfolderBase]: 136/567 cut-off events. [2024-01-29 22:49:59,724 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-01-29 22:49:59,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 567 events. 136/567 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2818 event pairs, 46 based on Foata normal form. 43/590 useless extension candidates. Maximal degree in co-relation 1156. Up to 170 conditions per place. [2024-01-29 22:49:59,727 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 34 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-01-29 22:49:59,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 82 transitions, 381 flow [2024-01-29 22:49:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 22:49:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 22:49:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-01-29 22:49:59,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8398692810457516 [2024-01-29 22:49:59,728 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 318 flow. Second operand 3 states and 257 transitions. [2024-01-29 22:49:59,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 82 transitions, 381 flow [2024-01-29 22:49:59,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 347 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-29 22:49:59,731 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 263 flow [2024-01-29 22:49:59,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-01-29 22:49:59,731 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -14 predicate places. [2024-01-29 22:49:59,731 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 263 flow [2024-01-29 22:49:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 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 22:49:59,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:49:59,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:49:59,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-29 22:49:59,732 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:49:59,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:49:59,733 INFO L85 PathProgramCache]: Analyzing trace with hash 441959330, now seen corresponding path program 1 times [2024-01-29 22:49:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:49:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924764157] [2024-01-29 22:49:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:49:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:49:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:49:59,810 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 22:49:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:49:59,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924764157] [2024-01-29 22:49:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924764157] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:49:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:49:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:49:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74779442] [2024-01-29 22:49:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:49:59,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 22:49:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:49:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 22:49:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-01-29 22:49:59,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-01-29 22:49:59,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 22:49:59,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:49:59,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-01-29 22:49:59,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:00,059 INFO L124 PetriNetUnfolderBase]: 160/577 cut-off events. [2024-01-29 22:50:00,059 INFO L125 PetriNetUnfolderBase]: For 286/290 co-relation queries the response was YES. [2024-01-29 22:50:00,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 577 events. 160/577 cut-off events. For 286/290 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2795 event pairs, 37 based on Foata normal form. 4/557 useless extension candidates. Maximal degree in co-relation 1225. Up to 142 conditions per place. [2024-01-29 22:50:00,062 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 60 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-01-29 22:50:00,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 473 flow [2024-01-29 22:50:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 22:50:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 22:50:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2024-01-29 22:50:00,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-01-29 22:50:00,064 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 263 flow. Second operand 6 states and 392 transitions. [2024-01-29 22:50:00,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 473 flow [2024-01-29 22:50:00,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 22:50:00,067 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 265 flow [2024-01-29 22:50:00,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-01-29 22:50:00,068 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -12 predicate places. [2024-01-29 22:50:00,068 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 265 flow [2024-01-29 22:50:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 22:50:00,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:00,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-29 22:50:00,069 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:50:00,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -185742901, now seen corresponding path program 1 times [2024-01-29 22:50:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015592839] [2024-01-29 22:50:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015592839] [2024-01-29 22:50:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015592839] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:50:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:50:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:50:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644075786] [2024-01-29 22:50:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:50:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 22:50:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 22:50:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-29 22:50:00,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-01-29 22:50:00,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 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 22:50:00,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:00,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-01-29 22:50:00,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:00,402 INFO L124 PetriNetUnfolderBase]: 154/563 cut-off events. [2024-01-29 22:50:00,402 INFO L125 PetriNetUnfolderBase]: For 326/330 co-relation queries the response was YES. [2024-01-29 22:50:00,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 563 events. 154/563 cut-off events. For 326/330 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2670 event pairs, 30 based on Foata normal form. 6/552 useless extension candidates. Maximal degree in co-relation 1163. Up to 104 conditions per place. [2024-01-29 22:50:00,405 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 66 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-01-29 22:50:00,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 504 flow [2024-01-29 22:50:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-29 22:50:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-29 22:50:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 463 transitions. [2024-01-29 22:50:00,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484593837535014 [2024-01-29 22:50:00,407 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 265 flow. Second operand 7 states and 463 transitions. [2024-01-29 22:50:00,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 504 flow [2024-01-29 22:50:00,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 487 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-29 22:50:00,409 INFO L231 Difference]: Finished difference. Result has 92 places, 73 transitions, 262 flow [2024-01-29 22:50:00,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=92, PETRI_TRANSITIONS=73} [2024-01-29 22:50:00,409 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -12 predicate places. [2024-01-29 22:50:00,409 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 73 transitions, 262 flow [2024-01-29 22:50:00,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 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 22:50:00,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:00,410 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, 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 22:50:00,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-29 22:50:00,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:50:00,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 662297527, now seen corresponding path program 1 times [2024-01-29 22:50:00,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:00,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650290957] [2024-01-29 22:50:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:00,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:00,514 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 22:50:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650290957] [2024-01-29 22:50:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650290957] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:50:00,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:50:00,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:50:00,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284795316] [2024-01-29 22:50:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:50:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:50:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:50:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:50:00,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 102 [2024-01-29 22:50:00,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 73 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:50:00,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:00,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 102 [2024-01-29 22:50:00,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:00,666 INFO L124 PetriNetUnfolderBase]: 134/518 cut-off events. [2024-01-29 22:50:00,666 INFO L125 PetriNetUnfolderBase]: For 299/303 co-relation queries the response was YES. [2024-01-29 22:50:00,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 518 events. 134/518 cut-off events. For 299/303 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2479 event pairs, 59 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 1059. Up to 120 conditions per place. [2024-01-29 22:50:00,668 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 37 selfloop transitions, 3 changer transitions 18/94 dead transitions. [2024-01-29 22:50:00,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 440 flow [2024-01-29 22:50:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:50:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:50:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2024-01-29 22:50:00,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7901960784313725 [2024-01-29 22:50:00,669 INFO L175 Difference]: Start difference. First operand has 92 places, 73 transitions, 262 flow. Second operand 5 states and 403 transitions. [2024-01-29 22:50:00,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 440 flow [2024-01-29 22:50:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 413 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-29 22:50:00,671 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 233 flow [2024-01-29 22:50:00,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2024-01-29 22:50:00,672 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -13 predicate places. [2024-01-29 22:50:00,672 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 233 flow [2024-01-29 22:50:00,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:50:00,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 22:50:00,673 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, 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 22:50:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-29 22:50:00,673 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-29 22:50:00,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 22:50:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1770845777, now seen corresponding path program 2 times [2024-01-29 22:50:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 22:50:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450815740] [2024-01-29 22:50:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 22:50:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 22:50:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 22:50:00,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 22:50:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 22:50:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450815740] [2024-01-29 22:50:00,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450815740] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 22:50:00,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 22:50:00,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 22:50:00,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471405506] [2024-01-29 22:50:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 22:50:00,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 22:50:00,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 22:50:00,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 22:50:00,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-29 22:50:00,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 102 [2024-01-29 22:50:00,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:50:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 22:50:00,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 102 [2024-01-29 22:50:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 22:50:00,868 INFO L124 PetriNetUnfolderBase]: 87/345 cut-off events. [2024-01-29 22:50:00,868 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2024-01-29 22:50:00,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 345 events. 87/345 cut-off events. For 153/157 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1367 event pairs, 39 based on Foata normal form. 1/323 useless extension candidates. Maximal degree in co-relation 717. Up to 83 conditions per place. [2024-01-29 22:50:00,869 INFO L140 encePairwiseOnDemand]: 98/102 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2024-01-29 22:50:00,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 340 flow [2024-01-29 22:50:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 22:50:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 22:50:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-01-29 22:50:00,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2024-01-29 22:50:00,871 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 233 flow. Second operand 5 states and 390 transitions. [2024-01-29 22:50:00,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 340 flow [2024-01-29 22:50:00,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 329 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 22:50:00,872 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2024-01-29 22:50:00,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2024-01-29 22:50:00,873 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, -18 predicate places. [2024-01-29 22:50:00,873 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2024-01-29 22:50:00,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 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 22:50:00,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 61 remaining) [2024-01-29 22:50:00,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-29 22:50:00,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-29 22:50:00,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-29 22:50:00,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-29 22:50:00,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-29 22:50:00,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-29 22:50:00,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-29 22:50:00,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-29 22:50:00,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (26 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-29 22:50:00,883 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-29 22:50:00,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-29 22:50:00,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-29 22:50:00,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-29 22:50:00,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 61 remaining) [2024-01-29 22:50:00,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-29 22:50:00,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-29 22:50:00,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-29 22:50:00,886 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 22:50:00,891 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 22:50:00,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 22:50:00,894 INFO L503 ceAbstractionStarter]: Automizer considered 34 witness invariants [2024-01-29 22:50:00,894 INFO L504 ceAbstractionStarter]: WitnessConsidered=34 [2024-01-29 22:50:00,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:50:00 BasicIcfg [2024-01-29 22:50:00,895 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 22:50:00,896 INFO L158 Benchmark]: Toolchain (without parser) took 7280.44ms. Allocated memory was 151.0MB in the beginning and 306.2MB in the end (delta: 155.2MB). Free memory was 82.6MB in the beginning and 196.8MB in the end (delta: -114.2MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,896 INFO L158 Benchmark]: Witness Parser took 1.12ms. Allocated memory is still 151.0MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:50:00,896 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 22:50:00,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.27ms. Allocated memory is still 151.0MB. Free memory was 82.6MB in the beginning and 57.0MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.60ms. Allocated memory is still 151.0MB. Free memory was 57.0MB in the beginning and 55.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,897 INFO L158 Benchmark]: Boogie Preprocessor took 33.68ms. Allocated memory is still 151.0MB. Free memory was 55.4MB in the beginning and 52.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,898 INFO L158 Benchmark]: RCFGBuilder took 554.46ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 52.8MB in the beginning and 127.2MB in the end (delta: -74.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,899 INFO L158 Benchmark]: TraceAbstraction took 6107.74ms. Allocated memory was 188.7MB in the beginning and 306.2MB in the end (delta: 117.4MB). Free memory was 126.2MB in the beginning and 196.8MB in the end (delta: -70.6MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-01-29 22:50:00,900 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 1.12ms. Allocated memory is still 151.0MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.27ms. Allocated memory is still 151.0MB. Free memory was 82.6MB in the beginning and 57.0MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.60ms. Allocated memory is still 151.0MB. Free memory was 57.0MB in the beginning and 55.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.68ms. Allocated memory is still 151.0MB. Free memory was 55.4MB in the beginning and 52.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 554.46ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 52.8MB in the beginning and 127.2MB in the end (delta: -74.5MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6107.74ms. Allocated memory was 188.7MB in the beginning and 306.2MB in the end (delta: 117.4MB). Free memory was 126.2MB in the beginning and 196.8MB in the end (delta: -70.6MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 696]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 697]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 706]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 709]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 718]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 719]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 61 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.0s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2977 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1828 mSDsluCounter, 521 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 226 mSDsCounter, 364 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3732 IncrementalHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 364 mSolverCounterUnsat, 295 mSDtfsCounter, 3732 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=15, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 1703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 35 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-29 22:50:00,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE