./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_91-arrayloop2_racefree.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_91-arrayloop2_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_91-arrayloop2_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:07:47,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:07:47,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:07:47,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:07:47,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:07:47,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:07:47,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:07:47,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:07:47,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:07:47,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:07:47,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:07:47,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:07:47,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:07:47,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:07:47,987 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:07:47,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:07:47,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:07:47,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:07:47,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:07:47,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:07:47,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:07:47,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:07:47,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:07:47,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:07:47,990 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:07:47,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:07:47,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:07:47,991 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:07:47,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:07:47,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:07:47,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:07:47,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:07:47,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:47,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:07:47,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:07:47,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:07:47,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:07:47,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:07:47,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:07:47,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:07:47,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:07:47,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:07:47,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:07:47,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:07:48,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:07:48,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:07:48,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:07:48,218 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:07:48,219 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:07:48,220 INFO L431 ainManager$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_91-arrayloop2_racefree.yml/witness.yml [2024-02-07 19:07:48,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:07:48,357 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:07:48,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-02-07 19:07:49,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:07:49,904 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:07:49,905 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-02-07 19:07:49,938 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45a6cf59/edca7a082db04b339df92b9086f28216/FLAG26e291d82 [2024-02-07 19:07:49,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45a6cf59/edca7a082db04b339df92b9086f28216 [2024-02-07 19:07:49,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:07:49,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:07:49,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:49,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:07:49,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:07:49,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:48" (1/2) ... [2024-02-07 19:07:49,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540c5b5a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:49, skipping insertion in model container [2024-02-07 19:07:49,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:48" (1/2) ... [2024-02-07 19:07:49,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e4cfb16 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:49, skipping insertion in model container [2024-02-07 19:07:49,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:49" (2/2) ... [2024-02-07 19:07:49,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540c5b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:49, skipping insertion in model container [2024-02-07 19:07:49,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:49" (2/2) ... [2024-02-07 19:07:49,989 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:07:50,073 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:07:50,074 INFO L76 edCorrectnessWitness]: Location invariant before [L1061-L1061] ((((((((((((((((((((((((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) || i == 19) || i == 18) || i == 17 [2024-02-07 19:07:50,074 INFO L76 edCorrectnessWitness]: Location invariant before [L1062-L1062] ((((((((((((((((((((((((i == 21 || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22 [2024-02-07 19:07:50,074 INFO L76 edCorrectnessWitness]: Location invariant before [L1059-L1059] ((0 <= i) && (i <= 9)) && (((((((6 <= j && j <= 29) || j == 5) || j == 4) || j == 3) || j == 2) || j == 1) || (0 == j && j == 0)) [2024-02-07 19:07:50,074 INFO L76 edCorrectnessWitness]: Location invariant before [L1057-L1057] (0 <= i) && (i <= 9) [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant before [L1058-L1058] (0 <= i) && (i <= 9) [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant after [L1061-L1061] ((((((((((((((((((((((((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) || i == 19) || i == 18) || i == 17 [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant before [L1043-L1043] j <= 9 [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant before [L1051-L1051] j <= 9 [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant after [L1062-L1062] ((((((((((((((((((((((((i == 21 || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22 [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant before [L1024-L1024] (0 <= x) && (x <= 261) [2024-02-07 19:07:50,075 INFO L76 edCorrectnessWitness]: Location invariant after [L1059-L1059] ((0 <= i) && (i <= 9)) && (((((((6 <= j && j <= 29) || j == 5) || j == 4) || j == 3) || j == 2) || j == 1) || (0 == j && j == 0)) [2024-02-07 19:07:50,149 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:07:50,684 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_91-arrayloop2_racefree.i[47038,47051] [2024-02-07 19:07:50,705 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,713 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,713 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,715 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:50,786 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:07:50,892 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_91-arrayloop2_racefree.i[47038,47051] Start Parsing Local [2024-02-07 19:07:50,947 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,948 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,949 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:50,950 WARN L1564 CHandler]: Possible shadowing of function new Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:07:51,006 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:51,085 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:07:51,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51 WrapperNode [2024-02-07 19:07:51,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:51,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:51,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:07:51,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:07:51,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,197 INFO L138 Inliner]: procedures = 278, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 203 [2024-02-07 19:07:51,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:51,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:07:51,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:07:51,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:07:51,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,254 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 5, 2, 19]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 14 writes are split as follows [0, 0, 1, 13]. [2024-02-07 19:07:51,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,274 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:07:51,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:07:51,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:07:51,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:07:51,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (1/1) ... [2024-02-07 19:07:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:51,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:51,398 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 19:07:51,417 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 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:07:51,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:07:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:07:51,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:07:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:07:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:07:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:07:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:07:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:07:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 19:07:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:07:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 19:07:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 19:07:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 19:07:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 19:07:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:07:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:07:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:07:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:07:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:07:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:07:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:07:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:07:51,485 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 19:07:51,727 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:07:51,729 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:07:51,998 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:07:51,998 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:07:52,155 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:07:52,155 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 19:07:52,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:52 BoogieIcfgContainer [2024-02-07 19:07:52,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:07:52,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:07:52,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:07:52,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:07:52,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:48" (1/4) ... [2024-02-07 19:07:52,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9152b1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:07:52, skipping insertion in model container [2024-02-07 19:07:52,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:07:49" (2/4) ... [2024-02-07 19:07:52,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9152b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:52, skipping insertion in model container [2024-02-07 19:07:52,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51" (3/4) ... [2024-02-07 19:07:52,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9152b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:52, skipping insertion in model container [2024-02-07 19:07:52,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:52" (4/4) ... [2024-02-07 19:07:52,162 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-02-07 19:07:52,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:07:52,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-02-07 19:07:52,179 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:07:52,218 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:07:52,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 76 transitions, 159 flow [2024-02-07 19:07:52,299 INFO L124 PetriNetUnfolderBase]: 17/80 cut-off events. [2024-02-07 19:07:52,299 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:52,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 17/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 194 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-02-07 19:07:52,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 76 transitions, 159 flow [2024-02-07 19:07:52,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 75 transitions, 157 flow [2024-02-07 19:07:52,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:52,343 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;@6e5fff00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:52,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-02-07 19:07:52,346 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:52,346 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 19:07:52,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:52,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:52,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:52,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:52,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 555470, now seen corresponding path program 1 times [2024-02-07 19:07:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628969253] [2024-02-07 19:07:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:52,637 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 19:07:52,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628969253] [2024-02-07 19:07:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628969253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:52,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:07:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093183857] [2024-02-07 19:07:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:52,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:52,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 76 [2024-02-07 19:07:52,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 19:07:52,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:52,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 76 [2024-02-07 19:07:52,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:52,960 INFO L124 PetriNetUnfolderBase]: 138/410 cut-off events. [2024-02-07 19:07:52,960 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:52,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 410 events. 138/410 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1905 event pairs, 114 based on Foata normal form. 50/397 useless extension candidates. Maximal degree in co-relation 641. Up to 285 conditions per place. [2024-02-07 19:07:52,965 INFO L140 encePairwiseOnDemand]: 60/76 looper letters, 44 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-02-07 19:07:52,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 239 flow [2024-02-07 19:07:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-02-07 19:07:52,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-02-07 19:07:52,980 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 157 flow. Second operand 3 states and 132 transitions. [2024-02-07 19:07:52,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 239 flow [2024-02-07 19:07:52,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 239 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:07:52,987 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 151 flow [2024-02-07 19:07:52,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-02-07 19:07:52,994 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-02-07 19:07:52,994 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 151 flow [2024-02-07 19:07:52,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 19:07:52,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:52,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:07:52,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:07:52,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:52,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:52,996 INFO L85 PathProgramCache]: Analyzing trace with hash -631308427, now seen corresponding path program 1 times [2024-02-07 19:07:52,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:52,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531929007] [2024-02-07 19:07:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:52,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:53,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:53,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117487885] [2024-02-07 19:07:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:53,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:53,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:53,064 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 19:07:53,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:07:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:53,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 19:07:53,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:53,196 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 19:07:53,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531929007] [2024-02-07 19:07:53,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117487885] [2024-02-07 19:07:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117487885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:53,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:53,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491729965] [2024-02-07 19:07:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:53,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:53,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:53,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:53,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 76 [2024-02-07 19:07:53,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 19:07:53,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:53,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 76 [2024-02-07 19:07:53,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:53,536 INFO L124 PetriNetUnfolderBase]: 138/409 cut-off events. [2024-02-07 19:07:53,536 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:07:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 409 events. 138/409 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1903 event pairs, 114 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 691. Up to 286 conditions per place. [2024-02-07 19:07:53,539 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 43 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-02-07 19:07:53,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 255 flow [2024-02-07 19:07:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-02-07 19:07:53,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-02-07 19:07:53,541 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 151 flow. Second operand 4 states and 140 transitions. [2024-02-07 19:07:53,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 255 flow [2024-02-07 19:07:53,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:53,543 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 173 flow [2024-02-07 19:07:53,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-02-07 19:07:53,544 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-02-07 19:07:53,544 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 173 flow [2024-02-07 19:07:53,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 19:07:53,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:53,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:07:53,560 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 19:07:53,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:53,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:53,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:53,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1904277611, now seen corresponding path program 1 times [2024-02-07 19:07:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836306759] [2024-02-07 19:07:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:53,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:53,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:53,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836306759] [2024-02-07 19:07:53,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836306759] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:53,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:53,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:53,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946487789] [2024-02-07 19:07:53,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:53,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2024-02-07 19:07:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 19:07:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2024-02-07 19:07:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:54,020 INFO L124 PetriNetUnfolderBase]: 138/414 cut-off events. [2024-02-07 19:07:54,021 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 19:07:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 414 events. 138/414 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1916 event pairs, 114 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 699. Up to 289 conditions per place. [2024-02-07 19:07:54,023 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 42 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-02-07 19:07:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 283 flow [2024-02-07 19:07:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-02-07 19:07:54,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2024-02-07 19:07:54,025 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 173 flow. Second operand 3 states and 119 transitions. [2024-02-07 19:07:54,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 283 flow [2024-02-07 19:07:54,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:07:54,027 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 196 flow [2024-02-07 19:07:54,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-02-07 19:07:54,028 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-02-07 19:07:54,028 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 196 flow [2024-02-07 19:07:54,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 19:07:54,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:54,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:07:54,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:54,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1904275809, now seen corresponding path program 1 times [2024-02-07 19:07:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:54,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879964422] [2024-02-07 19:07:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:54,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:54,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313932414] [2024-02-07 19:07:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:54,060 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 19:07:54,085 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 19:07:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:54,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-07 19:07:54,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:54,236 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 19:07:54,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879964422] [2024-02-07 19:07:54,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313932414] [2024-02-07 19:07:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313932414] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:07:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675027519] [2024-02-07 19:07:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:07:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:07:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:07:54,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 76 [2024-02-07 19:07:54,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 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 19:07:54,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:54,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 76 [2024-02-07 19:07:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:54,504 INFO L124 PetriNetUnfolderBase]: 138/419 cut-off events. [2024-02-07 19:07:54,504 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-02-07 19:07:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 419 events. 138/419 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1938 event pairs, 114 based on Foata normal form. 4/362 useless extension candidates. Maximal degree in co-relation 701. Up to 276 conditions per place. [2024-02-07 19:07:54,506 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 43 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-02-07 19:07:54,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 332 flow [2024-02-07 19:07:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:07:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:07:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-02-07 19:07:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2024-02-07 19:07:54,509 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 196 flow. Second operand 6 states and 182 transitions. [2024-02-07 19:07:54,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 332 flow [2024-02-07 19:07:54,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:07:54,511 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 237 flow [2024-02-07 19:07:54,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-02-07 19:07:54,512 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2024-02-07 19:07:54,512 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 237 flow [2024-02-07 19:07:54,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 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 19:07:54,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:54,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:54,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-07 19:07:54,725 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,SelfDestructingSolverStorable3 [2024-02-07 19:07:54,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:54,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1941836160, now seen corresponding path program 1 times [2024-02-07 19:07:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416326116] [2024-02-07 19:07:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:54,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475449732] [2024-02-07 19:07:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:54,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:54,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 19:07:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:54,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-07 19:07:54,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:55,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416326116] [2024-02-07 19:07:55,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475449732] [2024-02-07 19:07:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475449732] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:55,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 19:07:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-02-07 19:07:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408870983] [2024-02-07 19:07:55,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:55,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 19:07:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 19:07:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-02-07 19:07:55,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 76 [2024-02-07 19:07:55,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 237 flow. Second operand has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 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 19:07:55,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:55,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 76 [2024-02-07 19:07:55,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:55,856 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-02-07 19:07:55,856 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-07 19:07:55,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 23 events. 1/23 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 8/31 useless extension candidates. Maximal degree in co-relation 89. Up to 7 conditions per place. [2024-02-07 19:07:55,856 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 14 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2024-02-07 19:07:55,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 179 flow [2024-02-07 19:07:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:07:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:07:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-02-07 19:07:55,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3347953216374269 [2024-02-07 19:07:55,858 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 237 flow. Second operand 9 states and 229 transitions. [2024-02-07 19:07:55,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 179 flow [2024-02-07 19:07:55,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 23 transitions, 118 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-07 19:07:55,860 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 95 flow [2024-02-07 19:07:55,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=95, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2024-02-07 19:07:55,860 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -36 predicate places. [2024-02-07 19:07:55,861 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 95 flow [2024-02-07 19:07:55,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.7) internal successors, (237), 10 states have internal predecessors, (237), 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 19:07:55,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:55,861 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1] [2024-02-07 19:07:55,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:56,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:56,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1757278016, now seen corresponding path program 2 times [2024-02-07 19:07:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235193697] [2024-02-07 19:07:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:56,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769423879] [2024-02-07 19:07:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:07:56,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:56,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:56,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 19:07:56,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:07:56,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:07:56,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-07 19:07:56,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:56,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235193697] [2024-02-07 19:07:57,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:57,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769423879] [2024-02-07 19:07:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769423879] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:57,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 19:07:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-02-07 19:07:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006951765] [2024-02-07 19:07:57,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-07 19:07:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-07 19:07:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-02-07 19:07:57,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 76 [2024-02-07 19:07:57,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 95 flow. Second operand has 18 states, 18 states have (on average 24.27777777777778) internal successors, (437), 18 states have internal predecessors, (437), 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 19:07:57,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:57,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 76 [2024-02-07 19:07:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:59,483 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-02-07 19:07:59,483 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-02-07 19:07:59,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 47 events. 1/47 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 8/55 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2024-02-07 19:07:59,485 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 30 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2024-02-07 19:07:59,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 359 flow [2024-02-07 19:07:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-07 19:07:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-07 19:07:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 429 transitions. [2024-02-07 19:07:59,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3320433436532508 [2024-02-07 19:07:59,490 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 95 flow. Second operand 17 states and 429 transitions. [2024-02-07 19:07:59,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 359 flow [2024-02-07 19:07:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 304 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-02-07 19:07:59,501 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 199 flow [2024-02-07 19:07:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=199, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2024-02-07 19:07:59,516 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2024-02-07 19:07:59,516 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 199 flow [2024-02-07 19:07:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 24.27777777777778) internal successors, (437), 18 states have internal predecessors, (437), 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 19:07:59,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:59,517 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1] [2024-02-07 19:07:59,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-02-07 19:07:59,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:59,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 10 more)] === [2024-02-07 19:07:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1707831104, now seen corresponding path program 3 times [2024-02-07 19:07:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309432099] [2024-02-07 19:07:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:00,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:08:00,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645296288] [2024-02-07 19:08:00,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 19:08:00,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:00,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:00,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:08:00,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15