./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:27:06,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:27:06,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:27:06,715 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:27:06,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:27:06,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:27:06,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:27:06,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:27:06,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:27:06,734 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:27:06,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:27:06,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:27:06,735 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:27:06,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:27:06,735 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:27:06,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:27:06,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:27:06,736 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:27:06,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:27:06,737 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:27:06,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:27:06,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:27:06,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:27:06,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:27:06,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:27:06,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:27:06,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:27:06,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:27:06,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:27:06,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:27:06,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:27:06,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:27:06,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:06,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:27:06,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:27:06,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:27:06,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:27:06,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:27:06,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:27:06,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:27:06,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:27:06,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:27:06,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:27:06,743 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:27:06,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:27:07,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:27:07,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:27:07,012 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:27:07,012 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:27:07,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_42-trylock2_racefree.yml/witness.yml [2024-02-07 14:27:07,082 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:27:07,082 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:27:07,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-07 14:27:08,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:27:08,241 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:27:08,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-02-07 14:27:08,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca4532be/9fd87fba8efe49f987e6ddd3f4deb527/FLAG528604dbb [2024-02-07 14:27:08,270 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca4532be/9fd87fba8efe49f987e6ddd3f4deb527 [2024-02-07 14:27:08,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:27:08,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:27:08,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:08,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:27:08,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:27:08,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:07" (1/2) ... [2024-02-07 14:27:08,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c1859 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:08, skipping insertion in model container [2024-02-07 14:27:08,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:07" (1/2) ... [2024-02-07 14:27:08,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a889442 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:08, skipping insertion in model container [2024-02-07 14:27:08,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:08" (2/2) ... [2024-02-07 14:27:08,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c1859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08, skipping insertion in model container [2024-02-07 14:27:08,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:08" (2/2) ... [2024-02-07 14:27:08,295 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:27:08,338 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:27:08,339 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:08,339 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] g1 == 0 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 0 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 0 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 1 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 1 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 0 [2024-02-07 14:27:08,340 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 1 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 0 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant after [L717-L717] g1 == 0 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant after [L722-L722] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant after [L720-L720] g1 == 0 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] g1 == 0 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 1 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant after [L702-L702] g1 == 0 [2024-02-07 14:27:08,341 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 1 [2024-02-07 14:27:08,342 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 0 [2024-02-07 14:27:08,342 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] g2 == 0 [2024-02-07 14:27:08,342 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] g1 == 0 [2024-02-07 14:27:08,342 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] g1 == 1 [2024-02-07 14:27:08,342 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 1 [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 1 [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant before [L705-L705] g2 == 0 [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant after [L718-L718] g2 == 0 [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant before [L722-L722] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] g1 == 0 [2024-02-07 14:27:08,343 INFO L76 edCorrectnessWitness]: Location invariant after [L705-L705] g2 == 0 [2024-02-07 14:27:08,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:27:08,626 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2024-02-07 14:27:08,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:08,660 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:27:08,689 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:27:08,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:27:08,806 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:27:08,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08 WrapperNode [2024-02-07 14:27:08,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:08,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:08,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:27:08,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:27:08,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,872 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 155 [2024-02-07 14:27:08,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:27:08,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:27:08,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:27:08,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:27:08,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,919 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 2, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 0, 5]. The 1 writes are split as follows [0, 0, 0, 1, 0]. [2024-02-07 14:27:08,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:27:08,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:27:08,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:27:08,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:27:08,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (1/1) ... [2024-02-07 14:27:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:08,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:08,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:27:08,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:27:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:27:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:27:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:27:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:27:09,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:27:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:27:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:27:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:27:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:27:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:27:09,018 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:27:09,115 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:27:09,117 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:27:09,358 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:27:09,359 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:27:09,506 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:27:09,507 INFO L320 CfgBuilder]: Removed 23 assume(true) statements. [2024-02-07 14:27:09,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:09 BoogieIcfgContainer [2024-02-07 14:27:09,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:27:09,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:27:09,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:27:09,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:27:09,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:07" (1/4) ... [2024-02-07 14:27:09,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37991d0d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:27:09, skipping insertion in model container [2024-02-07 14:27:09,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:27:08" (2/4) ... [2024-02-07 14:27:09,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37991d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:09, skipping insertion in model container [2024-02-07 14:27:09,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:08" (3/4) ... [2024-02-07 14:27:09,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37991d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:27:09, skipping insertion in model container [2024-02-07 14:27:09,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:27:09" (4/4) ... [2024-02-07 14:27:09,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-02-07 14:27:09,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:27:09,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-02-07 14:27:09,527 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:27:09,585 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:27:09,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 137 transitions, 281 flow [2024-02-07 14:27:09,679 INFO L124 PetriNetUnfolderBase]: 41/207 cut-off events. [2024-02-07 14:27:09,679 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:27:09,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 41/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 990 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 130. Up to 6 conditions per place. [2024-02-07 14:27:09,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 137 transitions, 281 flow [2024-02-07 14:27:09,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 136 transitions, 279 flow [2024-02-07 14:27:09,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:09,711 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;@716294ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:09,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-02-07 14:27:09,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:09,715 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:09,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:09,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:09,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:09,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 14:27:09,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash 589285043, now seen corresponding path program 1 times [2024-02-07 14:27:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913738731] [2024-02-07 14:27:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:10,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913738731] [2024-02-07 14:27:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913738731] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:10,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999163372] [2024-02-07 14:27:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:10,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:10,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:10,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 137 [2024-02-07 14:27:10,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 137 [2024-02-07 14:27:10,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:10,215 INFO L124 PetriNetUnfolderBase]: 63/199 cut-off events. [2024-02-07 14:27:10,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:10,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 199 events. 63/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 604 event pairs, 0 based on Foata normal form. 30/221 useless extension candidates. Maximal degree in co-relation 324. Up to 129 conditions per place. [2024-02-07 14:27:10,219 INFO L140 encePairwiseOnDemand]: 121/137 looper letters, 46 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-02-07 14:27:10,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 246 flow [2024-02-07 14:27:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-02-07 14:27:10,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531021897810219 [2024-02-07 14:27:10,238 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 279 flow. Second operand 4 states and 291 transitions. [2024-02-07 14:27:10,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 246 flow [2024-02-07 14:27:10,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:10,245 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 110 flow [2024-02-07 14:27:10,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-02-07 14:27:10,250 INFO L281 CegarLoopForPetriNet]: 113 programPoint places, -56 predicate places. [2024-02-07 14:27:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 110 flow [2024-02-07 14:27:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:10,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:10,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:27:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:27:10,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 24 more)] === [2024-02-07 14:27:10,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -632734585, now seen corresponding path program 1 times [2024-02-07 14:27:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:10,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244930654] [2024-02-07 14:27:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:10,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:10,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:10,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:10,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2024-02-07 14:27:10,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 27 remaining) [2024-02-07 14:27:10,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 27 remaining) [2024-02-07 14:27:10,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 27 remaining) [2024-02-07 14:27:10,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (22 of 27 remaining) [2024-02-07 14:27:10,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 27 remaining) [2024-02-07 14:27:10,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (20 of 27 remaining) [2024-02-07 14:27:10,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (19 of 27 remaining) [2024-02-07 14:27:10,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 27 remaining) [2024-02-07 14:27:10,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (17 of 27 remaining) [2024-02-07 14:27:10,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 27 remaining) [2024-02-07 14:27:10,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 27 remaining) [2024-02-07 14:27:10,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 27 remaining) [2024-02-07 14:27:10,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 27 remaining) [2024-02-07 14:27:10,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 27 remaining) [2024-02-07 14:27:10,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 27 remaining) [2024-02-07 14:27:10,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 27 remaining) [2024-02-07 14:27:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:27:10,348 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 14:27:10,351 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:10,351 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:27:10,391 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:27:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 196 transitions, 408 flow [2024-02-07 14:27:10,433 INFO L124 PetriNetUnfolderBase]: 69/349 cut-off events. [2024-02-07 14:27:10,433 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:27:10,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 349 events. 69/349 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1930 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 213. Up to 9 conditions per place. [2024-02-07 14:27:10,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 196 transitions, 408 flow [2024-02-07 14:27:10,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 196 transitions, 408 flow [2024-02-07 14:27:10,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:10,445 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;@716294ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:10,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-02-07 14:27:10,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:10,448 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:10,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:10,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:10,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:10,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 14:27:10,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 776383600, now seen corresponding path program 1 times [2024-02-07 14:27:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751578308] [2024-02-07 14:27:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751578308] [2024-02-07 14:27:10,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751578308] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:10,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:10,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149781573] [2024-02-07 14:27:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:10,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:10,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 196 [2024-02-07 14:27:10,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 196 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:10,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:10,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 196 [2024-02-07 14:27:10,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:15,284 INFO L124 PetriNetUnfolderBase]: 30788/62874 cut-off events. [2024-02-07 14:27:15,285 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-02-07 14:27:15,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109913 conditions, 62874 events. 30788/62874 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 625167 event pairs, 14428 based on Foata normal form. 15312/74635 useless extension candidates. Maximal degree in co-relation 5020. Up to 45823 conditions per place. [2024-02-07 14:27:15,745 INFO L140 encePairwiseOnDemand]: 155/196 looper letters, 145 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-02-07 14:27:15,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 226 transitions, 764 flow [2024-02-07 14:27:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 536 transitions. [2024-02-07 14:27:15,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-02-07 14:27:15,748 INFO L175 Difference]: Start difference. First operand has 161 places, 196 transitions, 408 flow. Second operand 4 states and 536 transitions. [2024-02-07 14:27:15,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 226 transitions, 764 flow [2024-02-07 14:27:15,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 226 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:27:15,756 INFO L231 Difference]: Finished difference. Result has 166 places, 160 transitions, 352 flow [2024-02-07 14:27:15,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2024-02-07 14:27:15,757 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2024-02-07 14:27:15,757 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 352 flow [2024-02-07 14:27:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:15,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:15,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:27:15,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 14:27:15,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1175482400, now seen corresponding path program 1 times [2024-02-07 14:27:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:15,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861309990] [2024-02-07 14:27:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:15,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:15,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861309990] [2024-02-07 14:27:15,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861309990] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:15,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:15,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:27:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813688714] [2024-02-07 14:27:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:27:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:27:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:27:15,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 196 [2024-02-07 14:27:15,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 160 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:15,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:15,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 196 [2024-02-07 14:27:15,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:21,842 INFO L124 PetriNetUnfolderBase]: 41649/89679 cut-off events. [2024-02-07 14:27:21,842 INFO L125 PetriNetUnfolderBase]: For 2906/2906 co-relation queries the response was YES. [2024-02-07 14:27:22,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159685 conditions, 89679 events. 41649/89679 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 1549. Compared 996441 event pairs, 27777 based on Foata normal form. 3020/87606 useless extension candidates. Maximal degree in co-relation 146978. Up to 49901 conditions per place. [2024-02-07 14:27:22,368 INFO L140 encePairwiseOnDemand]: 177/196 looper letters, 153 selfloop transitions, 10 changer transitions 0/235 dead transitions. [2024-02-07 14:27:22,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 235 transitions, 850 flow [2024-02-07 14:27:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:27:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:27:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-02-07 14:27:22,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2024-02-07 14:27:22,374 INFO L175 Difference]: Start difference. First operand has 166 places, 160 transitions, 352 flow. Second operand 3 states and 388 transitions. [2024-02-07 14:27:22,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 235 transitions, 850 flow [2024-02-07 14:27:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 235 transitions, 847 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:27:22,386 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 436 flow [2024-02-07 14:27:22,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=436, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2024-02-07 14:27:22,388 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 8 predicate places. [2024-02-07 14:27:22,388 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 436 flow [2024-02-07 14:27:22,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:22,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:22,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:27:22,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:27:22,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 14:27:22,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash 450703094, now seen corresponding path program 1 times [2024-02-07 14:27:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512074368] [2024-02-07 14:27:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512074368] [2024-02-07 14:27:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512074368] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:27:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753786363] [2024-02-07 14:27:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:27:22,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:27:22,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:27:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:22,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:27:22,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:27:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:22,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:27:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753786363] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:27:22,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:27:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:27:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806508732] [2024-02-07 14:27:22,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:27:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:27:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:27:22,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:27:22,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 196 [2024-02-07 14:27:22,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:22,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:22,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 196 [2024-02-07 14:27:22,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:23,587 INFO L124 PetriNetUnfolderBase]: 4061/9516 cut-off events. [2024-02-07 14:27:23,600 INFO L125 PetriNetUnfolderBase]: For 4281/4293 co-relation queries the response was YES. [2024-02-07 14:27:23,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18327 conditions, 9516 events. 4061/9516 cut-off events. For 4281/4293 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 78011 event pairs, 1624 based on Foata normal form. 1328/10788 useless extension candidates. Maximal degree in co-relation 3271. Up to 5475 conditions per place. [2024-02-07 14:27:23,633 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 120 selfloop transitions, 3 changer transitions 0/172 dead transitions. [2024-02-07 14:27:23,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 172 transitions, 704 flow [2024-02-07 14:27:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:27:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:27:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2024-02-07 14:27:23,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173469387755102 [2024-02-07 14:27:23,636 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 436 flow. Second operand 5 states and 507 transitions. [2024-02-07 14:27:23,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 172 transitions, 704 flow [2024-02-07 14:27:23,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 172 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:27:23,642 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 258 flow [2024-02-07 14:27:23,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-02-07 14:27:23,644 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -51 predicate places. [2024-02-07 14:27:23,645 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 258 flow [2024-02-07 14:27:23,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:23,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:23,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:27:23,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:27:23,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:27:23,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 14:27:23,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2080215101, now seen corresponding path program 1 times [2024-02-07 14:27:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041971634] [2024-02-07 14:27:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041971634] [2024-02-07 14:27:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041971634] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:23,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318118336] [2024-02-07 14:27:23,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:23,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:23,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:23,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 196 [2024-02-07 14:27:23,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:23,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:23,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 196 [2024-02-07 14:27:23,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:27:24,332 INFO L124 PetriNetUnfolderBase]: 3397/7476 cut-off events. [2024-02-07 14:27:24,332 INFO L125 PetriNetUnfolderBase]: For 2023/2023 co-relation queries the response was YES. [2024-02-07 14:27:24,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14508 conditions, 7476 events. 3397/7476 cut-off events. For 2023/2023 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 55413 event pairs, 2421 based on Foata normal form. 328/7666 useless extension candidates. Maximal degree in co-relation 12771. Up to 3983 conditions per place. [2024-02-07 14:27:24,361 INFO L140 encePairwiseOnDemand]: 185/196 looper letters, 83 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-02-07 14:27:24,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 492 flow [2024-02-07 14:27:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:27:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:27:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-02-07 14:27:24,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46683673469387754 [2024-02-07 14:27:24,363 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 258 flow. Second operand 4 states and 366 transitions. [2024-02-07 14:27:24,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 492 flow [2024-02-07 14:27:24,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 484 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:27:24,365 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 239 flow [2024-02-07 14:27:24,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-02-07 14:27:24,366 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -55 predicate places. [2024-02-07 14:27:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 239 flow [2024-02-07 14:27:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:24,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:24,367 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:27:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:27:24,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 32 more)] === [2024-02-07 14:27:24,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash -665995069, now seen corresponding path program 1 times [2024-02-07 14:27:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:24,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801385777] [2024-02-07 14:27:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:24,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:27:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:27:24,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:27:24,389 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:27:24,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (30 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (28 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (27 of 35 remaining) [2024-02-07 14:27:24,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (25 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 35 remaining) [2024-02-07 14:27:24,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 35 remaining) [2024-02-07 14:27:24,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 35 remaining) [2024-02-07 14:27:24,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 35 remaining) [2024-02-07 14:27:24,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 35 remaining) [2024-02-07 14:27:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:27:24,394 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-02-07 14:27:24,394 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:27:24,394 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:27:24,419 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:27:24,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 255 transitions, 537 flow [2024-02-07 14:27:24,518 INFO L124 PetriNetUnfolderBase]: 100/506 cut-off events. [2024-02-07 14:27:24,518 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-07 14:27:24,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 506 events. 100/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2950 event pairs, 1 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 362. Up to 12 conditions per place. [2024-02-07 14:27:24,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 255 transitions, 537 flow [2024-02-07 14:27:24,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 255 transitions, 537 flow [2024-02-07 14:27:24,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:27:24,529 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;@716294ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:27:24,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-02-07 14:27:24,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:27:24,531 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-02-07 14:27:24,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:27:24,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:27:24,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:27:24,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-02-07 14:27:24,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:27:24,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1019786152, now seen corresponding path program 1 times [2024-02-07 14:27:24,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:27:24,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502082089] [2024-02-07 14:27:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:27:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:27:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:27:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:27:24,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:27:24,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502082089] [2024-02-07 14:27:24,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502082089] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:27:24,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:27:24,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:27:24,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624178302] [2024-02-07 14:27:24,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:27:24,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:27:24,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:27:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:27:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:27:24,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 255 [2024-02-07 14:27:24,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 537 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:27:24,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:27:24,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 255 [2024-02-07 14:27:24,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand