./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_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_90-arrayloop2_racing.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_90-arrayloop2_racing.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:54:44,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:54:44,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:54:44,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:54:44,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:54:44,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:54:44,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:54:44,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:54:44,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:54:44,323 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:54:44,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:54:44,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:54:44,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:54:44,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:54:44,325 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:54:44,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:54:44,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:54:44,326 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:54:44,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:54:44,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:54:44,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:54:44,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:54:44,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:54:44,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:54:44,328 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:54:44,328 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:54:44,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:54:44,329 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:54:44,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:54:44,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:54:44,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:54:44,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:54:44,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:44,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:54:44,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:54:44,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:54:44,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:54:44,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:54:44,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:54:44,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:54:44,332 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:54:44,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:54:44,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:54:44,333 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:54:44,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:54:44,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:54:44,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:54:44,595 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:54:44,595 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:54:44,596 INFO L431 ainManager$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_90-arrayloop2_racing.yml/witness.yml [2024-02-07 14:54:44,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:54:44,682 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:54:44,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-02-07 14:54:45,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:54:46,036 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:54:46,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2024-02-07 14:54:46,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e419f35/aadb3f1bb03a4d1590c09c1c0b774bff/FLAG7e46a3ee3 [2024-02-07 14:54:46,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e419f35/aadb3f1bb03a4d1590c09c1c0b774bff [2024-02-07 14:54:46,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:54:46,064 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:54:46,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:46,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:54:46,081 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:54:46,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:44" (1/2) ... [2024-02-07 14:54:46,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5e98d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:44" (1/2) ... [2024-02-07 14:54:46,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35a66ad1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:46" (2/2) ... [2024-02-07 14:54:46,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5e98d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46, skipping insertion in model container [2024-02-07 14:54:46,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:54:46" (2/2) ... [2024-02-07 14:54:46,085 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:54:46,134 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant before [L1083-L1083] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant before [L1063-L1063] j <= 9 [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant before [L1079-L1079] (0 <= i) && (i <= 9) [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant before [L1043-L1043] j <= 9 [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant before [L1082-L1082] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,135 INFO L76 edCorrectnessWitness]: Location invariant after [L1083-L1083] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant before [L1082-L1082] ((((((((((((((((((((((((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 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant after [L1083-L1083] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant after [L1082-L1082] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant before [L1071-L1071] j <= 9 [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant before [L1051-L1051] j <= 9 [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant before [L1078-L1078] (0 <= i) && (i <= 9) [2024-02-07 14:54:46,136 INFO L76 edCorrectnessWitness]: Location invariant after [L1082-L1082] ((((((((((((((((((((((((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 14:54:46,137 INFO L76 edCorrectnessWitness]: Location invariant before [L1083-L1083] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 14:54:46,137 INFO L76 edCorrectnessWitness]: Location invariant after [L1080-L1080] ((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 14:54:46,137 INFO L76 edCorrectnessWitness]: Location invariant before [L1080-L1080] ((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 14:54:46,137 INFO L76 edCorrectnessWitness]: Location invariant before [L1024-L1024] (0 <= x) && (x <= 261) [2024-02-07 14:54:46,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:54:46,541 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_90-arrayloop2_racing.i[47038,47051] [2024-02-07 14:54:46,555 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,556 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,556 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,557 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:46,624 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:54:46,671 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_90-arrayloop2_racing.i[47038,47051] Start Parsing Local [2024-02-07 14:54:46,702 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,703 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,704 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:54:46,704 WARN L1556 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:54:46,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:54:46,829 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:54:46,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46 WrapperNode [2024-02-07 14:54:46,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:54:46,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:46,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:54:46,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:54:46,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,884 INFO L138 Inliner]: procedures = 279, calls = 72, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 338 [2024-02-07 14:54:46,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:54:46,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:54:46,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:54:46,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:54:46,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,940 INFO L175 MemorySlicer]: Split 37 memory accesses to 5 slices as follows [2, 2, 5, 26, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0]. The 17 writes are split as follows [0, 1, 0, 15, 1]. [2024-02-07 14:54:46,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:54:46,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:54:46,989 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:54:46,989 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:54:46,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (1/1) ... [2024-02-07 14:54:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:54:47,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:47,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 14:54:47,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 14:54:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:54:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:54:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:54:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-02-07 14:54:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:54:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:54:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:54:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:54:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:54:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:54:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-02-07 14:54:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-02-07 14:54:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:54:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:54:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:54:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:54:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:54:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:54:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:54:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:54:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:54:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:54:47,077 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:54:47,244 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:54:47,246 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:54:47,685 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:54:47,687 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:54:47,879 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:54:47,880 INFO L320 CfgBuilder]: Removed 30 assume(true) statements. [2024-02-07 14:54:47,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:47 BoogieIcfgContainer [2024-02-07 14:54:47,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:54:47,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:54:47,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:54:47,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:54:47,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:54:44" (1/4) ... [2024-02-07 14:54:47,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7167ed55 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:54:47, skipping insertion in model container [2024-02-07 14:54:47,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:54:46" (2/4) ... [2024-02-07 14:54:47,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7167ed55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:47, skipping insertion in model container [2024-02-07 14:54:47,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:54:46" (3/4) ... [2024-02-07 14:54:47,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7167ed55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:54:47, skipping insertion in model container [2024-02-07 14:54:47,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:54:47" (4/4) ... [2024-02-07 14:54:47,890 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2024-02-07 14:54:47,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:54:47,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-02-07 14:54:47,904 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:54:47,985 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:54:48,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 141 transitions, 302 flow [2024-02-07 14:54:48,116 INFO L124 PetriNetUnfolderBase]: 52/232 cut-off events. [2024-02-07 14:54:48,116 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-07 14:54:48,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 232 events. 52/232 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1041 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 134. Up to 8 conditions per place. [2024-02-07 14:54:48,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 141 transitions, 302 flow [2024-02-07 14:54:48,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 141 transitions, 302 flow [2024-02-07 14:54:48,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:54:48,161 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;@215bacfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:54:48,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-02-07 14:54:48,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:54:48,168 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 14:54:48,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:54:48,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:48,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:54:48,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:48,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:48,179 INFO L85 PathProgramCache]: Analyzing trace with hash 865389, now seen corresponding path program 1 times [2024-02-07 14:54:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898681720] [2024-02-07 14:54:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:48,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:48,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898681720] [2024-02-07 14:54:48,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898681720] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:48,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:48,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:54:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33451096] [2024-02-07 14:54:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:48,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:48,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:48,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 141 [2024-02-07 14:54:48,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 141 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:48,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:48,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 141 [2024-02-07 14:54:48,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:50,151 INFO L124 PetriNetUnfolderBase]: 8205/16317 cut-off events. [2024-02-07 14:54:50,152 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-02-07 14:54:50,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28514 conditions, 16317 events. 8205/16317 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 137499 event pairs, 6954 based on Foata normal form. 2672/16817 useless extension candidates. Maximal degree in co-relation 27067. Up to 12060 conditions per place. [2024-02-07 14:54:50,271 INFO L140 encePairwiseOnDemand]: 114/141 looper letters, 78 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-02-07 14:54:50,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 430 flow [2024-02-07 14:54:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2024-02-07 14:54:50,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-02-07 14:54:50,286 INFO L175 Difference]: Start difference. First operand has 112 places, 141 transitions, 302 flow. Second operand 3 states and 240 transitions. [2024-02-07 14:54:50,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 430 flow [2024-02-07 14:54:50,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 125 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:54:50,295 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 274 flow [2024-02-07 14:54:50,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2024-02-07 14:54:50,300 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2024-02-07 14:54:50,300 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 274 flow [2024-02-07 14:54:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:50,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:50,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:54:50,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:54:50,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:50,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:50,302 INFO L85 PathProgramCache]: Analyzing trace with hash 11840776, now seen corresponding path program 1 times [2024-02-07 14:54:50,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771183976] [2024-02-07 14:54:50,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:50,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:50,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:54:50,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4477054] [2024-02-07 14:54:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:50,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:50,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:50,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:50,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 14:54:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:50,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:54:50,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:50,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:54:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771183976] [2024-02-07 14:54:50,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:54:50,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4477054] [2024-02-07 14:54:50,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4477054] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:50,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:50,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:54:50,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474185068] [2024-02-07 14:54:50,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:54:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:54:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:54:50,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 141 [2024-02-07 14:54:50,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:50,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:50,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 141 [2024-02-07 14:54:50,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:52,112 INFO L124 PetriNetUnfolderBase]: 8205/16316 cut-off events. [2024-02-07 14:54:52,112 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-02-07 14:54:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28523 conditions, 16316 events. 8205/16316 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 137468 event pairs, 6954 based on Foata normal form. 0/14147 useless extension candidates. Maximal degree in co-relation 28498. Up to 12061 conditions per place. [2024-02-07 14:54:52,189 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 77 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-02-07 14:54:52,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 125 transitions, 446 flow [2024-02-07 14:54:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:54:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:54:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-02-07 14:54:52,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-02-07 14:54:52,194 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 274 flow. Second operand 4 states and 258 transitions. [2024-02-07 14:54:52,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 125 transitions, 446 flow [2024-02-07 14:54:52,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 125 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:52,199 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 296 flow [2024-02-07 14:54:52,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-02-07 14:54:52,200 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 7 predicate places. [2024-02-07 14:54:52,201 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 296 flow [2024-02-07 14:54:52,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:52,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:52,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:54:52,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:52,424 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 14:54:52,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:52,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash 367067149, now seen corresponding path program 1 times [2024-02-07 14:54:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801849135] [2024-02-07 14:54:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:52,522 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 14:54:52,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801849135] [2024-02-07 14:54:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801849135] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:54:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678102310] [2024-02-07 14:54:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:52,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:54:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:54:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:54:52,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 141 [2024-02-07 14:54:52,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:52,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:52,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 141 [2024-02-07 14:54:52,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:54,142 INFO L124 PetriNetUnfolderBase]: 8205/16321 cut-off events. [2024-02-07 14:54:54,143 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-02-07 14:54:54,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28547 conditions, 16321 events. 8205/16321 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 137568 event pairs, 6954 based on Foata normal form. 2/14155 useless extension candidates. Maximal degree in co-relation 28506. Up to 12064 conditions per place. [2024-02-07 14:54:54,208 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 76 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-02-07 14:54:54,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 474 flow [2024-02-07 14:54:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:54:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:54:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2024-02-07 14:54:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-02-07 14:54:54,210 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 296 flow. Second operand 3 states and 216 transitions. [2024-02-07 14:54:54,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 474 flow [2024-02-07 14:54:54,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 126 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:54:54,213 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 319 flow [2024-02-07 14:54:54,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-02-07 14:54:54,214 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 8 predicate places. [2024-02-07 14:54:54,214 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 319 flow [2024-02-07 14:54:54,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:54,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:54,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:54:54,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:54,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash 367064986, now seen corresponding path program 1 times [2024-02-07 14:54:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:54,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630338815] [2024-02-07 14:54:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:54,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:54:54,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932757767] [2024-02-07 14:54:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:54,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:54,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:54,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 14:54:54,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 14:54:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:54,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-07 14:54:54,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:54:54,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:54:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630338815] [2024-02-07 14:54:54,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:54:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932757767] [2024-02-07 14:54:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932757767] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:54:54,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:54:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:54:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890613971] [2024-02-07 14:54:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:54:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:54:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:54:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:54:54,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-02-07 14:54:54,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:54,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:54,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-02-07 14:54:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:55,985 INFO L124 PetriNetUnfolderBase]: 8205/16326 cut-off events. [2024-02-07 14:54:55,985 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-02-07 14:54:56,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28578 conditions, 16326 events. 8205/16326 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 137598 event pairs, 6954 based on Foata normal form. 4/14160 useless extension candidates. Maximal degree in co-relation 28508. Up to 12051 conditions per place. [2024-02-07 14:54:56,072 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 77 selfloop transitions, 10 changer transitions 0/130 dead transitions. [2024-02-07 14:54:56,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 130 transitions, 523 flow [2024-02-07 14:54:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:54:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:54:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 342 transitions. [2024-02-07 14:54:56,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40425531914893614 [2024-02-07 14:54:56,074 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 319 flow. Second operand 6 states and 342 transitions. [2024-02-07 14:54:56,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 130 transitions, 523 flow [2024-02-07 14:54:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 130 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:54:56,078 INFO L231 Difference]: Finished difference. Result has 124 places, 125 transitions, 360 flow [2024-02-07 14:54:56,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=124, PETRI_TRANSITIONS=125} [2024-02-07 14:54:56,079 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2024-02-07 14:54:56,079 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 125 transitions, 360 flow [2024-02-07 14:54:56,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:56,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:56,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:54:56,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 14:54:56,291 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 14:54:56,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:56,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash 247215870, now seen corresponding path program 1 times [2024-02-07 14:54:56,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:56,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801536447] [2024-02-07 14:54:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:56,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:54:56,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307340926] [2024-02-07 14:54:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:56,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:56,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:56,356 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 14:54:56,393 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 14:54:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:54:56,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-07 14:54:56,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:56,794 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 14:54:56,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:57,056 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 14:54:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801536447] [2024-02-07 14:54:57,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:54:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307340926] [2024-02-07 14:54:57,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307340926] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:57,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 14:54:57,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-02-07 14:54:57,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530951026] [2024-02-07 14:54:57,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:57,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 14:54:57,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 14:54:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-02-07 14:54:57,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-02-07 14:54:57,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 125 transitions, 360 flow. Second operand has 10 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:57,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:57,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-02-07 14:54:57,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:54:58,310 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-02-07 14:54:58,311 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-07 14:54:58,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 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 14:54:58,312 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 14 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2024-02-07 14:54:58,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 179 flow [2024-02-07 14:54:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:54:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:54:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 418 transitions. [2024-02-07 14:54:58,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32939322301024426 [2024-02-07 14:54:58,315 INFO L175 Difference]: Start difference. First operand has 124 places, 125 transitions, 360 flow. Second operand 9 states and 418 transitions. [2024-02-07 14:54:58,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 179 flow [2024-02-07 14:54:58,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 118 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-07 14:54:58,318 INFO L231 Difference]: Finished difference. Result has 27 places, 14 transitions, 95 flow [2024-02-07 14:54:58,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=14, 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=27, PETRI_TRANSITIONS=14} [2024-02-07 14:54:58,321 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -85 predicate places. [2024-02-07 14:54:58,322 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 14 transitions, 95 flow [2024-02-07 14:54:58,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:58,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:54:58,322 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1] [2024-02-07 14:54:58,352 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 14:54:58,535 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 14:54:58,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:54:58,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:54:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -81769474, now seen corresponding path program 2 times [2024-02-07 14:54:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:54:58,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058181417] [2024-02-07 14:54:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:54:58,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:54:58,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:54:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349413757] [2024-02-07 14:54:58,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:54:58,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:54:58,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:54:58,629 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 14:54:58,650 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 14:54:58,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:54:58,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:54:59,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-07 14:54:59,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:54:59,166 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 14:54:59,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:54:59,866 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 14:54:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:54:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058181417] [2024-02-07 14:54:59,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:54:59,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349413757] [2024-02-07 14:54:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349413757] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:54:59,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 14:54:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-02-07 14:54:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35296388] [2024-02-07 14:54:59,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 14:54:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-07 14:54:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:54:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-07 14:54:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-02-07 14:54:59,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-02-07 14:54:59,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 14 transitions, 95 flow. Second operand has 18 states, 18 states have (on average 45.27777777777778) internal successors, (815), 18 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:54:59,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:54:59,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-02-07 14:54:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:55:04,070 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-02-07 14:55:04,070 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-02-07 14:55:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 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 14:55:04,071 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 30 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2024-02-07 14:55:04,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 359 flow [2024-02-07 14:55:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-07 14:55:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-07 14:55:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 786 transitions. [2024-02-07 14:55:04,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.327909887359199 [2024-02-07 14:55:04,076 INFO L175 Difference]: Start difference. First operand has 27 places, 14 transitions, 95 flow. Second operand 17 states and 786 transitions. [2024-02-07 14:55:04,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 359 flow [2024-02-07 14:55:04,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 304 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-02-07 14:55:04,079 INFO L231 Difference]: Finished difference. Result has 48 places, 23 transitions, 199 flow [2024-02-07 14:55:04,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=48, PETRI_TRANSITIONS=23} [2024-02-07 14:55:04,083 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -64 predicate places. [2024-02-07 14:55:04,083 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 23 transitions, 199 flow [2024-02-07 14:55:04,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.27777777777778) internal successors, (815), 18 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:55:04,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:55:04,085 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1] [2024-02-07 14:55:04,098 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 14:55:04,297 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 14:55:04,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT, t2_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2024-02-07 14:55:04,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:55:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 667022846, now seen corresponding path program 3 times [2024-02-07 14:55:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:55:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493228050] [2024-02-07 14:55:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:55:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:55:04,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:55:04,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764588635] [2024-02-07 14:55:04,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:55:04,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:55:04,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:55:04,469 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 14:55:04,504 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