./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 e7c74aec 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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:32:12,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:32:12,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:32:12,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:32:12,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:32:12,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:32:12,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:32:12,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:32:12,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:32:12,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:32:12,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:32:12,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:32:12,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:32:12,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:32:12,731 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:32:12,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:32:12,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:32:12,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:32:12,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:32:12,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:32:12,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:32:12,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:32:12,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:32:12,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:32:12,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:32:12,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:32:12,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:32:12,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:32:12,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:32:12,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:32:12,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:32:12,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:32:12,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:12,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:32:12,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:32:12,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:32:12,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:32:12,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:32:12,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:32:12,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:32:12,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:32:12,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:32:12,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:32:12,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:32:12,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:32:12,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:32:12,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:32:12,992 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:32:12,992 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:32:12,993 INFO L431 ainManager$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 19:32:13,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:32:13,071 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:32:13,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2024-02-07 19:32:14,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:32:14,362 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:32:14,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2024-02-07 19:32:14,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9368268b2/a508cfefade242d9bfd2436ede525df1/FLAG13032d218 [2024-02-07 19:32:14,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9368268b2/a508cfefade242d9bfd2436ede525df1 [2024-02-07 19:32:14,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:32:14,384 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:32:14,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:14,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:32:14,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:32:14,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:13" (1/2) ... [2024-02-07 19:32:14,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df3076a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:14, skipping insertion in model container [2024-02-07 19:32:14,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:13" (1/2) ... [2024-02-07 19:32:14,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49df9132 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:14, skipping insertion in model container [2024-02-07 19:32:14,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:14" (2/2) ... [2024-02-07 19:32:14,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df3076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14, skipping insertion in model container [2024-02-07 19:32:14,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:14" (2/2) ... [2024-02-07 19:32:14,392 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:32:14,421 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:32:14,422 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] 1 <= g [2024-02-07 19:32:14,423 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] ((0 <= g) && (0 <= *g2)) && (g2 == & g) [2024-02-07 19:32:14,423 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 19:32:14,423 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 19:32:14,423 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] ((0 <= g) && (0 <= *g2)) && (g2 == & g) [2024-02-07 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] 1 <= g [2024-02-07 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((0 <= g) && (0 <= *g1)) && (g1 == & g) [2024-02-07 19:32:14,424 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 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((0 <= g) && (0 <= *g1)) && (g1 == & g) [2024-02-07 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] ((1 <= g) && (1 <= *g1)) && (g1 == & g) [2024-02-07 19:32:14,424 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 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] ((1 <= g) && (1 <= *g1)) && (g1 == & g) [2024-02-07 19:32:14,424 INFO L76 edCorrectnessWitness]: Location invariant after [L703-L703] (0 <= g) && (g <= 2147483646) [2024-02-07 19:32:14,425 INFO L76 edCorrectnessWitness]: Location invariant before [L703-L703] (0 <= g) && (g <= 2147483646) [2024-02-07 19:32:14,468 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:32:14,688 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 19:32:14,703 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:14,711 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:32:14,738 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 19:32:14,780 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:14,819 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:32:14,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14 WrapperNode [2024-02-07 19:32:14,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:14,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:14,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:32:14,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:32:14,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,859 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-02-07 19:32:14,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:14,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:32:14,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:32:14,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:32:14,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,901 INFO L175 MemorySlicer]: Split 29 memory accesses to 5 slices as follows [2, 5, 15, 5, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-02-07 19:32:14,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:32:14,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:32:14,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:32:14,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:32:14,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (1/1) ... [2024-02-07 19:32:14,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:14,966 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 19:32:14,967 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 19:32:14,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:32:14,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:32:14,998 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:32:14,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:32:14,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:32:14,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:32:15,001 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 19:32:15,108 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:32:15,110 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:32:15,378 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:32:15,378 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:32:15,505 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:32:15,506 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-07 19:32:15,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:15 BoogieIcfgContainer [2024-02-07 19:32:15,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:32:15,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:32:15,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:32:15,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:32:15,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:13" (1/4) ... [2024-02-07 19:32:15,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ac08f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:15, skipping insertion in model container [2024-02-07 19:32:15,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:32:14" (2/4) ... [2024-02-07 19:32:15,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ac08f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:15, skipping insertion in model container [2024-02-07 19:32:15,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:14" (3/4) ... [2024-02-07 19:32:15,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ac08f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:15, skipping insertion in model container [2024-02-07 19:32:15,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:15" (4/4) ... [2024-02-07 19:32:15,515 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-02-07 19:32:15,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:32:15,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-02-07 19:32:15,529 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:32:15,582 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:32:15,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 60 transitions, 127 flow [2024-02-07 19:32:15,652 INFO L124 PetriNetUnfolderBase]: 13/79 cut-off events. [2024-02-07 19:32:15,652 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:15,655 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 19:32:15,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 60 transitions, 127 flow [2024-02-07 19:32:15,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 59 transitions, 125 flow [2024-02-07 19:32:15,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:15,679 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;@744429ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:15,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 19:32:15,684 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:15,684 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:15,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:15,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:15,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:15,686 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 19:32:15,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:15,690 INFO L85 PathProgramCache]: Analyzing trace with hash 377156454, now seen corresponding path program 1 times [2024-02-07 19:32:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796337090] [2024-02-07 19:32:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:15,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:15,958 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 19:32:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796337090] [2024-02-07 19:32:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796337090] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:15,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:15,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78271998] [2024-02-07 19:32:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:15,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-02-07 19:32:16,001 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 19:32:16,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:16,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-02-07 19:32:16,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:16,119 INFO L124 PetriNetUnfolderBase]: 39/143 cut-off events. [2024-02-07 19:32:16,119 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:16,120 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 19:32:16,123 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 30 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-07 19:32:16,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 158 flow [2024-02-07 19:32:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-02-07 19:32:16,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-02-07 19:32:16,137 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 125 flow. Second operand 4 states and 131 transitions. [2024-02-07 19:32:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 158 flow [2024-02-07 19:32:16,140 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 19:32:16,143 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 70 flow [2024-02-07 19:32:16,145 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 19:32:16,148 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -16 predicate places. [2024-02-07 19:32:16,149 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 70 flow [2024-02-07 19:32:16,149 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 19:32:16,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:16,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:32:16,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:32:16,150 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 19:32:16,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1670111323, now seen corresponding path program 1 times [2024-02-07 19:32:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:16,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939040343] [2024-02-07 19:32:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:16,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:16,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:16,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:16,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-02-07 19:32:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 13 remaining) [2024-02-07 19:32:16,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 13 remaining) [2024-02-07 19:32:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2024-02-07 19:32:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 13 remaining) [2024-02-07 19:32:16,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 13 remaining) [2024-02-07 19:32:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 13 remaining) [2024-02-07 19:32:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 13 remaining) [2024-02-07 19:32:16,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 13 remaining) [2024-02-07 19:32:16,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 13 remaining) [2024-02-07 19:32:16,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 13 remaining) [2024-02-07 19:32:16,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 13 remaining) [2024-02-07 19:32:16,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 13 remaining) [2024-02-07 19:32:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:32:16,254 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:32:16,257 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:16,258 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:32:16,289 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:32:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 93 transitions, 202 flow [2024-02-07 19:32:16,325 INFO L124 PetriNetUnfolderBase]: 24/144 cut-off events. [2024-02-07 19:32:16,326 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 19:32:16,329 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 19:32:16,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 93 transitions, 202 flow [2024-02-07 19:32:16,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 93 transitions, 202 flow [2024-02-07 19:32:16,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:16,336 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;@744429ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:16,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-02-07 19:32:16,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:16,341 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:16,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:16,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:16,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:16,342 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 19:32:16,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash 465936610, now seen corresponding path program 1 times [2024-02-07 19:32:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640227457] [2024-02-07 19:32:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:16,507 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 19:32:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640227457] [2024-02-07 19:32:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640227457] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081458577] [2024-02-07 19:32:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:16,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 19:32:16,514 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 19:32:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 19:32:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:17,464 INFO L124 PetriNetUnfolderBase]: 4720/9570 cut-off events. [2024-02-07 19:32:17,464 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-02-07 19:32:17,479 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 19:32:17,517 INFO L140 encePairwiseOnDemand]: 74/93 looper letters, 85 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-02-07 19:32:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 434 flow [2024-02-07 19:32:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-02-07 19:32:17,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-02-07 19:32:17,524 INFO L175 Difference]: Start difference. First operand has 81 places, 93 transitions, 202 flow. Second operand 4 states and 256 transitions. [2024-02-07 19:32:17,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 434 flow [2024-02-07 19:32:17,526 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 19:32:17,528 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 190 flow [2024-02-07 19:32:17,528 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 19:32:17,529 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 5 predicate places. [2024-02-07 19:32:17,529 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 190 flow [2024-02-07 19:32:17,529 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 19:32:17,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:17,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:32:17,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:32:17,530 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 19:32:17,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1925112036, now seen corresponding path program 1 times [2024-02-07 19:32:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:17,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005882244] [2024-02-07 19:32:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:17,663 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 19:32:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:17,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005882244] [2024-02-07 19:32:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005882244] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:17,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912681637] [2024-02-07 19:32:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:17,666 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 19:32:17,700 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 19:32:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:17,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:32:17,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:17,832 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 19:32:17,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:17,850 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 19:32:17,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912681637] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:17,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:17,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:32:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285012644] [2024-02-07 19:32:17,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:32:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:32:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:32:17,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 19:32:17,861 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 19:32:17,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:17,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 19:32:17,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:18,127 INFO L124 PetriNetUnfolderBase]: 1313/2552 cut-off events. [2024-02-07 19:32:18,127 INFO L125 PetriNetUnfolderBase]: For 661/661 co-relation queries the response was YES. [2024-02-07 19:32:18,132 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 19:32:18,195 INFO L140 encePairwiseOnDemand]: 89/93 looper letters, 72 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-02-07 19:32:18,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 370 flow [2024-02-07 19:32:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-02-07 19:32:18,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204301075268817 [2024-02-07 19:32:18,196 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 190 flow. Second operand 5 states and 242 transitions. [2024-02-07 19:32:18,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 370 flow [2024-02-07 19:32:18,199 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 19:32:18,201 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 136 flow [2024-02-07 19:32:18,201 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 19:32:18,203 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-02-07 19:32:18,203 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 136 flow [2024-02-07 19:32:18,204 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 19:32:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:18,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:18,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-07 19:32:18,416 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 19:32:18,417 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 19:32:18,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1220028113, now seen corresponding path program 1 times [2024-02-07 19:32:18,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:18,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778116357] [2024-02-07 19:32:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:18,510 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 19:32:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778116357] [2024-02-07 19:32:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778116357] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:18,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415455024] [2024-02-07 19:32:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:18,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 93 [2024-02-07 19:32:18,522 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 19:32:18,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:18,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 93 [2024-02-07 19:32:18,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:18,815 INFO L124 PetriNetUnfolderBase]: 1445/3012 cut-off events. [2024-02-07 19:32:18,815 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2024-02-07 19:32:18,818 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 19:32:18,829 INFO L140 encePairwiseOnDemand]: 88/93 looper letters, 63 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-02-07 19:32:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 371 flow [2024-02-07 19:32:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-02-07 19:32:18,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010752688172043 [2024-02-07 19:32:18,830 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 136 flow. Second operand 5 states and 233 transitions. [2024-02-07 19:32:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 371 flow [2024-02-07 19:32:18,831 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 19:32:18,832 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 171 flow [2024-02-07 19:32:18,833 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 19:32:18,834 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-02-07 19:32:18,834 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 171 flow [2024-02-07 19:32:18,835 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 19:32:18,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:18,835 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 19:32:18,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:32:18,835 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 19:32:18,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1098252880, now seen corresponding path program 1 times [2024-02-07 19:32:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942488031] [2024-02-07 19:32:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:18,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:18,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:18,869 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:18,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-02-07 19:32:18,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 17 remaining) [2024-02-07 19:32:18,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 17 remaining) [2024-02-07 19:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 17 remaining) [2024-02-07 19:32:18,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:32:18,872 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-02-07 19:32:18,873 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:18,873 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:32:18,908 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:32:18,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 126 transitions, 279 flow [2024-02-07 19:32:18,926 INFO L124 PetriNetUnfolderBase]: 38/224 cut-off events. [2024-02-07 19:32:18,926 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2024-02-07 19:32:18,928 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 19:32:18,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 126 transitions, 279 flow [2024-02-07 19:32:18,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 126 transitions, 279 flow [2024-02-07 19:32:18,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:18,939 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;@744429ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:18,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 19:32:18,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:18,943 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:18,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:18,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:18,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:18,943 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 19:32:18,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 586208831, now seen corresponding path program 1 times [2024-02-07 19:32:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:18,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848583875] [2024-02-07 19:32:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:18,980 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 19:32:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848583875] [2024-02-07 19:32:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848583875] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:18,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981316223] [2024-02-07 19:32:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:18,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:18,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 19:32:18,982 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 19:32:18,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:18,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 19:32:18,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:31,604 INFO L124 PetriNetUnfolderBase]: 106216/177485 cut-off events. [2024-02-07 19:32:31,604 INFO L125 PetriNetUnfolderBase]: For 3679/3679 co-relation queries the response was YES. [2024-02-07 19:32:31,922 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 19:32:32,810 INFO L140 encePairwiseOnDemand]: 101/126 looper letters, 101 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-02-07 19:32:32,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 149 transitions, 533 flow [2024-02-07 19:32:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2024-02-07 19:32:32,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6468253968253969 [2024-02-07 19:32:32,813 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 279 flow. Second operand 4 states and 326 transitions. [2024-02-07 19:32:32,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 149 transitions, 533 flow [2024-02-07 19:32:32,815 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 19:32:32,816 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 259 flow [2024-02-07 19:32:32,817 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 19:32:32,817 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2024-02-07 19:32:32,817 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 259 flow [2024-02-07 19:32:32,818 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 19:32:32,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:32,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:32:32,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:32:32,818 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 19:32:32,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:32,819 INFO L85 PathProgramCache]: Analyzing trace with hash -148635176, now seen corresponding path program 1 times [2024-02-07 19:32:32,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:32,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724046638] [2024-02-07 19:32:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:32,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:32,865 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 19:32:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724046638] [2024-02-07 19:32:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724046638] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134796049] [2024-02-07 19:32:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:32,867 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 19:32:32,868 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 19:32:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:32,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:32:32,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:32,980 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 19:32:32,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:32,993 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 19:32:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134796049] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:32,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:32,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:32:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410800978] [2024-02-07 19:32:32,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:32:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:32:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:32:32,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 19:32:32,997 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 19:32:32,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:32,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 19:32:32,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:44,678 INFO L124 PetriNetUnfolderBase]: 103836/168858 cut-off events. [2024-02-07 19:32:44,678 INFO L125 PetriNetUnfolderBase]: For 16311/16311 co-relation queries the response was YES. [2024-02-07 19:32:45,002 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 19:32:45,670 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 141 selfloop transitions, 4 changer transitions 0/190 dead transitions. [2024-02-07 19:32:45,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 190 transitions, 715 flow [2024-02-07 19:32:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2024-02-07 19:32:45,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-02-07 19:32:45,672 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 259 flow. Second operand 5 states and 372 transitions. [2024-02-07 19:32:45,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 190 transitions, 715 flow [2024-02-07 19:32:45,690 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 19:32:45,693 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 273 flow [2024-02-07 19:32:45,693 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 19:32:45,694 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, 10 predicate places. [2024-02-07 19:32:45,695 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 273 flow [2024-02-07 19:32:45,695 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 19:32:45,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:45,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:32:45,707 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 19:32:45,906 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 19:32:45,906 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 19:32:45,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash -959916050, now seen corresponding path program 1 times [2024-02-07 19:32:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135362572] [2024-02-07 19:32:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:45,998 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 19:32:45,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:45,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135362572] [2024-02-07 19:32:45,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135362572] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:45,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363437373] [2024-02-07 19:32:45,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:45,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:46,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:46,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:46,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 126 [2024-02-07 19:32:46,017 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 19:32:46,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:46,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 126 [2024-02-07 19:32:46,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand