./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.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_37-indirect_racing.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_37-indirect_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_37-indirect_racing.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 14:54:14,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:14,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:14,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:14,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:14,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:14,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:14,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:14,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:14,201 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:14,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:14,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:14,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:14,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:14,203 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:14,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:14,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:14,204 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:14,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:14,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:14,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:14,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:14,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:14,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:14,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:14,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:14,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:14,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:14,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:14,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:14,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:14,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:14,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:14,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:14,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:14,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:14,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:14,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:14,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:14,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:14,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:14,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:14,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:14,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:14,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:14,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:14,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:14,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:14,456 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:14,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2024-02-07 14:54:15,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:15,955 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:15,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2024-02-07 14:54:15,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf19a81e/ca7c908c4bf14539bdd5e848e9f95017/FLAGa1c70e112 [2024-02-07 14:54:15,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf19a81e/ca7c908c4bf14539bdd5e848e9f95017 [2024-02-07 14:54:15,987 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:15,988 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:15,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_37-indirect_racing.yml/witness.yml [2024-02-07 14:54:16,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:16,075 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:16,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:16,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:16,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:16,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:15" (1/2) ... [2024-02-07 14:54:16,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57737b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:16, skipping insertion in model container [2024-02-07 14:54:16,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:15" (1/2) ... [2024-02-07 14:54:16,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@797917ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:16, skipping insertion in model container [2024-02-07 14:54:16,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:16" (2/2) ... [2024-02-07 14:54:16,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57737b45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16, skipping insertion in model container [2024-02-07 14:54:16,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:16" (2/2) ... [2024-02-07 14:54:16,087 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:16,131 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:16,133 INFO L76 edCorrectnessWitness]: Location invariant before [L709-L709] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:54:16,133 INFO L76 edCorrectnessWitness]: Location invariant after [L709-L709] ((((((((((((((((((((((((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)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:54:16,133 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] ((0 <= g) && (0 <= *g2)) && (g2 == & g) [2024-02-07 14:54:16,134 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] (0 <= g) && (g <= 2147483646) [2024-02-07 14:54:16,134 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] (0 <= g) && (g <= 2147483646) [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((1 <= g) && (1 <= *g1)) && (g1 == & g) [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] ((0 <= g) && (0 <= *g2)) && (g2 == & g) [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= g) && (0 <= *g1)) && (g1 == & g) [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((1 <= g) && (1 <= *g1)) && (g1 == & g) [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (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 [2024-02-07 14:54:16,135 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] ((((((((((((((((((((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (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 [2024-02-07 14:54:16,136 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] 1 <= g [2024-02-07 14:54:16,136 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= g) && (0 <= *g1)) && (g1 == & g) [2024-02-07 14:54:16,136 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] 1 <= g [2024-02-07 14:54:16,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:16,533 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_37-indirect_racing.i[30176,30189] [2024-02-07 14:54:16,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:16,578 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:16,618 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_37-indirect_racing.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:54:16,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:16,714 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:16,715 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16 WrapperNode [2024-02-07 14:54:16,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:16,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:16,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:16,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:16,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,793 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-02-07 14:54:16,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:16,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:16,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:16,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:16,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,841 INFO L175 MemorySlicer]: Split 29 memory accesses to 5 slices as follows [2, 5, 5, 15, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 1, 0]. The 3 writes are split as follows [0, 0, 0, 2, 1]. [2024-02-07 14:54:16,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:16,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:16,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:16,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:16,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (1/1) ... [2024-02-07 14:54:16,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:16,901 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 14:54:16,926 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 14:54:16,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:16,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:16,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:54:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:16,951 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 14:54:17,075 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:17,077 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:17,424 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:17,425 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:17,547 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:17,547 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 14:54:17,548 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:17 BoogieIcfgContainer [2024-02-07 14:54:17,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:17,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:17,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:17,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:17,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:15" (1/4) ... [2024-02-07 14:54:17,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b2c354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:17, skipping insertion in model container [2024-02-07 14:54:17,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:16" (2/4) ... [2024-02-07 14:54:17,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b2c354 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:17, skipping insertion in model container [2024-02-07 14:54:17,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:16" (3/4) ... [2024-02-07 14:54:17,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b2c354 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:17, skipping insertion in model container [2024-02-07 14:54:17,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:17" (4/4) ... [2024-02-07 14:54:17,555 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-02-07 14:54:17,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:17,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-02-07 14:54:17,570 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:17,607 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:54:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 60 transitions, 127 flow [2024-02-07 14:54:17,668 INFO L124 PetriNetUnfolderBase]: 13/79 cut-off events. [2024-02-07 14:54:17,669 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:54:17,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 13/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 260 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-02-07 14:54:17,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 60 transitions, 127 flow [2024-02-07 14:54:17,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 59 transitions, 125 flow [2024-02-07 14:54:17,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:17,703 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;@65b6d2d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:17,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 14:54:17,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:17,707 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:54:17,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:17,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:17,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:17,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 14:54:17,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 377156454, now seen corresponding path program 1 times [2024-02-07 14:54:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203305092] [2024-02-07 14:54:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:18,105 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 14:54:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203305092] [2024-02-07 14:54:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203305092] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:18,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873187551] [2024-02-07 14:54:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:18,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:18,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:18,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-02-07 14:54:18,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 14:54:18,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:18,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-02-07 14:54:18,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:18,266 INFO L124 PetriNetUnfolderBase]: 39/143 cut-off events. [2024-02-07 14:54:18,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:18,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 143 events. 39/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 26 based on Foata normal form. 15/157 useless extension candidates. Maximal degree in co-relation 231. Up to 81 conditions per place. [2024-02-07 14:54:18,271 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 14:54:18,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 158 flow [2024-02-07 14:54:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-02-07 14:54:18,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-02-07 14:54:18,286 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 125 flow. Second operand 4 states and 131 transitions. [2024-02-07 14:54:18,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 158 flow [2024-02-07 14:54:18,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:18,294 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 70 flow [2024-02-07 14:54:18,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-02-07 14:54:18,301 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -16 predicate places. [2024-02-07 14:54:18,301 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 70 flow [2024-02-07 14:54:18,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 14:54:18,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:18,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:54:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:18,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2024-02-07 14:54:18,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1670111323, now seen corresponding path program 1 times [2024-02-07 14:54:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:18,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438338396] [2024-02-07 14:54:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:18,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:18,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:18,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:18,391 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:18,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-07 14:54:18,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining) [2024-02-07 14:54:18,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 13 remaining) [2024-02-07 14:54:18,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-02-07 14:54:18,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 13 remaining) [2024-02-07 14:54:18,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-02-07 14:54:18,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 13 remaining) [2024-02-07 14:54:18,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-02-07 14:54:18,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 13 remaining) [2024-02-07 14:54:18,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 13 remaining) [2024-02-07 14:54:18,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 13 remaining) [2024-02-07 14:54:18,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining) [2024-02-07 14:54:18,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 13 remaining) [2024-02-07 14:54:18,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:54:18,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 14:54:18,411 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:54:18,412 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 14:54:18,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:54:18,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 93 transitions, 202 flow [2024-02-07 14:54:18,464 INFO L124 PetriNetUnfolderBase]: 24/144 cut-off events. [2024-02-07 14:54:18,464 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:54:18,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 144 events. 24/144 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 611 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-02-07 14:54:18,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 93 transitions, 202 flow [2024-02-07 14:54:18,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 93 transitions, 202 flow [2024-02-07 14:54:18,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:18,470 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;@65b6d2d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:18,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-02-07 14:54:18,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:18,473 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:54:18,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:18,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:18,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:18,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:54:18,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash 465936610, now seen corresponding path program 1 times [2024-02-07 14:54:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3927743] [2024-02-07 14:54:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:18,546 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 14:54:18,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:18,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3927743] [2024-02-07 14:54:18,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3927743] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:18,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:18,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:18,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994193119] [2024-02-07 14:54:18,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:18,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:18,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:18,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:18,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 14:54:18,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 93 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 14:54:18,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:18,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 14:54:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:19,722 INFO L124 PetriNetUnfolderBase]: 4720/9570 cut-off events. [2024-02-07 14:54:19,723 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-02-07 14:54:19,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17119 conditions, 9570 events. 4720/9570 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 76814 event pairs, 1909 based on Foata normal form. 1874/10722 useless extension candidates. Maximal degree in co-relation 1207. Up to 6997 conditions per place. [2024-02-07 14:54:19,853 INFO L140 encePairwiseOnDemand]: 74/93 looper letters, 85 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-02-07 14:54:19,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 434 flow [2024-02-07 14:54:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-02-07 14:54:19,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-02-07 14:54:19,861 INFO L175 Difference]: Start difference. First operand has 81 places, 93 transitions, 202 flow. Second operand 4 states and 256 transitions. [2024-02-07 14:54:19,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 434 flow [2024-02-07 14:54:19,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:19,866 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 190 flow [2024-02-07 14:54:19,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-02-07 14:54:19,867 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2024-02-07 14:54:19,867 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 190 flow [2024-02-07 14:54:19,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 14:54:19,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:19,868 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:54:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:54:19,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:54:19,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1925112036, now seen corresponding path program 1 times [2024-02-07 14:54:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030669967] [2024-02-07 14:54:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:20,040 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 14:54:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030669967] [2024-02-07 14:54:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030669967] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029309308] [2024-02-07 14:54:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:20,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:20,043 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 14:54:20,066 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 14:54:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:20,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:54:20,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:20,180 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 14:54:20,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:20,196 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 14:54:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029309308] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:20,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:54:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173527209] [2024-02-07 14:54:20,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:54:20,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:54:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:54:20,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 14:54:20,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 14:54:20,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:20,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 14:54:20,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:20,605 INFO L124 PetriNetUnfolderBase]: 1313/2552 cut-off events. [2024-02-07 14:54:20,605 INFO L125 PetriNetUnfolderBase]: For 661/661 co-relation queries the response was YES. [2024-02-07 14:54:20,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 2552 events. 1313/2552 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 16004 event pairs, 208 based on Foata normal form. 392/2868 useless extension candidates. Maximal degree in co-relation 5070. Up to 1680 conditions per place. [2024-02-07 14:54:20,621 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 72 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-02-07 14:54:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 370 flow [2024-02-07 14:54:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-02-07 14:54:20,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204301075268817 [2024-02-07 14:54:20,623 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 190 flow. Second operand 5 states and 242 transitions. [2024-02-07 14:54:20,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 370 flow [2024-02-07 14:54:20,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 364 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:54:20,628 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 136 flow [2024-02-07 14:54:20,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-02-07 14:54:20,629 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-02-07 14:54:20,629 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 136 flow [2024-02-07 14:54:20,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 14:54:20,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:20,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:20,648 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 14:54:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:20,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:54:20,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1220028113, now seen corresponding path program 1 times [2024-02-07 14:54:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927427671] [2024-02-07 14:54:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:20,986 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 14:54:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:20,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927427671] [2024-02-07 14:54:20,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927427671] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:20,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:20,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469701854] [2024-02-07 14:54:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:21,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 14:54:21,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 14:54:21,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 14:54:21,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:21,366 INFO L124 PetriNetUnfolderBase]: 1445/3012 cut-off events. [2024-02-07 14:54:21,366 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2024-02-07 14:54:21,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5674 conditions, 3012 events. 1445/3012 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19425 event pairs, 497 based on Foata normal form. 0/2931 useless extension candidates. Maximal degree in co-relation 4623. Up to 2123 conditions per place. [2024-02-07 14:54:21,382 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 63 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-02-07 14:54:21,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 371 flow [2024-02-07 14:54:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-02-07 14:54:21,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010752688172043 [2024-02-07 14:54:21,384 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 136 flow. Second operand 5 states and 233 transitions. [2024-02-07 14:54:21,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 371 flow [2024-02-07 14:54:21,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:54:21,387 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 171 flow [2024-02-07 14:54:21,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-02-07 14:54:21,388 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-02-07 14:54:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 171 flow [2024-02-07 14:54:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 14:54:21,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,388 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 14:54:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:54:21,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:54:21,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1098252880, now seen corresponding path program 1 times [2024-02-07 14:54:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509062936] [2024-02-07 14:54:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:21,405 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:54:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:54:21,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:54:21,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:54:21,418 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-02-07 14:54:21,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-02-07 14:54:21,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining) [2024-02-07 14:54:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 17 remaining) [2024-02-07 14:54:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-02-07 14:54:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 17 remaining) [2024-02-07 14:54:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-02-07 14:54:21,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining) [2024-02-07 14:54:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining) [2024-02-07 14:54:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining) [2024-02-07 14:54:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 17 remaining) [2024-02-07 14:54:21,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 17 remaining) [2024-02-07 14:54:21,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:54:21,422 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-02-07 14:54:21,422 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 14:54:21,422 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 14:54:21,452 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 14:54:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 126 transitions, 279 flow [2024-02-07 14:54:21,475 INFO L124 PetriNetUnfolderBase]: 38/224 cut-off events. [2024-02-07 14:54:21,475 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-02-07 14:54:21,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 224 events. 38/224 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1018 event pairs, 1 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2024-02-07 14:54:21,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 126 transitions, 279 flow [2024-02-07 14:54:21,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 126 transitions, 279 flow [2024-02-07 14:54:21,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:21,481 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;@65b6d2d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:21,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 14:54:21,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:21,483 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 14:54:21,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:21,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:21,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:54:21,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:54:21,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash 586208831, now seen corresponding path program 1 times [2024-02-07 14:54:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879409586] [2024-02-07 14:54:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:21,525 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 14:54:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:21,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879409586] [2024-02-07 14:54:21,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879409586] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:21,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:21,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517352473] [2024-02-07 14:54:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:21,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:21,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 14:54:21,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 14:54:21,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:21,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 14:54:21,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:36,822 INFO L124 PetriNetUnfolderBase]: 106216/177485 cut-off events. [2024-02-07 14:54:36,823 INFO L125 PetriNetUnfolderBase]: For 3679/3679 co-relation queries the response was YES. [2024-02-07 14:54:37,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326054 conditions, 177485 events. 106216/177485 cut-off events. For 3679/3679 co-relation queries the response was YES. Maximal size of possible extension queue 3946. Compared 1743438 event pairs, 32668 based on Foata normal form. 38864/204723 useless extension candidates. Maximal degree in co-relation 17540. Up to 146587 conditions per place. [2024-02-07 14:54:37,998 INFO L140 encePairwiseOnDemand]: 101/126 looper letters, 101 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-02-07 14:54:37,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 149 transitions, 533 flow [2024-02-07 14:54:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2024-02-07 14:54:38,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6468253968253969 [2024-02-07 14:54:38,000 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 279 flow. Second operand 4 states and 326 transitions. [2024-02-07 14:54:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 149 transitions, 533 flow [2024-02-07 14:54:38,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 149 transitions, 533 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:38,010 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 259 flow [2024-02-07 14:54:38,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=259, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2024-02-07 14:54:38,012 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2024-02-07 14:54:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 259 flow [2024-02-07 14:54:38,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 14:54:38,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:38,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 14:54:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:54:38,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:54:38,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash -148635176, now seen corresponding path program 1 times [2024-02-07 14:54:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816683728] [2024-02-07 14:54:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:38,105 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 14:54:38,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:38,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816683728] [2024-02-07 14:54:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816683728] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:54:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846251404] [2024-02-07 14:54:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:38,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:38,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:54:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:38,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 14:54:38,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:38,253 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 14:54:38,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:38,270 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 14:54:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846251404] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:38,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:54:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:54:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386985843] [2024-02-07 14:54:38,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:54:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:38,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:54:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:54:38,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 14:54:38,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 259 flow. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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 14:54:38,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:38,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 14:54:38,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:51,385 INFO L124 PetriNetUnfolderBase]: 103836/168858 cut-off events. [2024-02-07 14:54:51,385 INFO L125 PetriNetUnfolderBase]: For 16311/16311 co-relation queries the response was YES. [2024-02-07 14:54:51,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325271 conditions, 168858 events. 103836/168858 cut-off events. For 16311/16311 co-relation queries the response was YES. Maximal size of possible extension queue 3621. Compared 1618448 event pairs, 2732 based on Foata normal form. 392/161293 useless extension candidates. Maximal degree in co-relation 19828. Up to 133511 conditions per place. [2024-02-07 14:54:52,455 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 141 selfloop transitions, 4 changer transitions 0/190 dead transitions. [2024-02-07 14:54:52,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 190 transitions, 715 flow [2024-02-07 14:54:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:54:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:54:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2024-02-07 14:54:52,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-02-07 14:54:52,459 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 259 flow. Second operand 5 states and 372 transitions. [2024-02-07 14:54:52,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 190 transitions, 715 flow [2024-02-07 14:54:52,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 715 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:52,489 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 273 flow [2024-02-07 14:54:52,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2024-02-07 14:54:52,491 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 10 predicate places. [2024-02-07 14:54:52,491 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 273 flow [2024-02-07 14:54:52,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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 14:54:52,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:52,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:52,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:52,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-02-07 14:54:52,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 18 more)] === [2024-02-07 14:54:52,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash -959916050, now seen corresponding path program 1 times [2024-02-07 14:54:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:52,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113233707] [2024-02-07 14:54:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:52,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113233707] [2024-02-07 14:54:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113233707] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:52,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559687354] [2024-02-07 14:54:52,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:52,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 14:54:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 14:54:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 14:54:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand