./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_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_93-evilcollapse_racefree.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_93-evilcollapse_racefree.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:27:58,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:27:58,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:27:58,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:27:58,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:27:58,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:27:58,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:27:58,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:27:58,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:27:58,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:27:58,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:27:58,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:27:58,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:27:58,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:27:58,186 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:27:58,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:27:58,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:27:58,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:27:58,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:27:58,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:27:58,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:27:58,190 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:27:58,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:27:58,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:27:58,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:27:58,191 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:27:58,192 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:27:58,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:27:58,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:27:58,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:27:58,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:27:58,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:27:58,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:27:58,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:27:58,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:27:58,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:27:58,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:27:58,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:27:58,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:27:58,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:27:58,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:27:58,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:27:58,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:27:58,198 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:27:58,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:27:58,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:27:58,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:27:58,503 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:27:58,503 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:27:58,506 INFO L431 ainManager$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_93-evilcollapse_racefree.yml/witness.yml [2024-02-07 14:27:58,645 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:27:58,646 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:27:58,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-07 14:27:59,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:27:59,924 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:27:59,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-07 14:27:59,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103a41d2b/52ccd7909b7e469192592bc03c84cc35/FLAG71c4f074d [2024-02-07 14:27:59,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103a41d2b/52ccd7909b7e469192592bc03c84cc35 [2024-02-07 14:27:59,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:27:59,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:27:59,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:27:59,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:27:59,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:27:59,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:58" (1/2) ... [2024-02-07 14:27:59,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6c5361 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:59, skipping insertion in model container [2024-02-07 14:27:59,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:58" (1/2) ... [2024-02-07 14:27:59,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1552f900 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:27:59, skipping insertion in model container [2024-02-07 14:27:59,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:59" (2/2) ... [2024-02-07 14:27:59,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6c5361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:27:59, skipping insertion in model container [2024-02-07 14:27:59,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:27:59" (2/2) ... [2024-02-07 14:27:59,979 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:28:00,060 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:28:00,062 INFO L76 edCorrectnessWitness]: Location invariant before [L1037-L1037] (0 <= hvalue1) && (7 == d) [2024-02-07 14:28:00,062 INFO L76 edCorrectnessWitness]: Location invariant after [L1083-L1083] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:28:00,062 INFO L76 edCorrectnessWitness]: Location invariant before [L1075-L1075] (0 <= i) && (i <= 9) [2024-02-07 14:28:00,062 INFO L76 edCorrectnessWitness]: Location invariant before [L1065-L1065] j <= 9 [2024-02-07 14:28:00,063 INFO L76 edCorrectnessWitness]: Location invariant before [L1024-L1024] (0 <= x) && (x <= 261) [2024-02-07 14:28:00,064 INFO L76 edCorrectnessWitness]: Location invariant before [L1036-L1036] 7 == d [2024-02-07 14:28:00,064 INFO L76 edCorrectnessWitness]: Location invariant before [L1040-L1040] 7 == d [2024-02-07 14:28:00,064 INFO L76 edCorrectnessWitness]: Location invariant after [L1036-L1036] 7 == d [2024-02-07 14:28:00,064 INFO L76 edCorrectnessWitness]: Location invariant before [L1082-L1082] ((((((((((((((((((((((((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) || i == 16) || i == 15) || i == 14 [2024-02-07 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant after [L1076-L1076] ((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 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant before [L1039-L1039] 7 == d [2024-02-07 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant before [L1057-L1057] j <= 9 [2024-02-07 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant before [L1083-L1083] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant after [L1082-L1082] ((((((((((((((((((((((((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) || i == 16) || i == 15) || i == 14 [2024-02-07 14:28:00,065 INFO L76 edCorrectnessWitness]: Location invariant before [L1076-L1076] ((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 14:28:00,066 INFO L76 edCorrectnessWitness]: Location invariant before [L1074-L1074] (0 <= i) && (i <= 9) [2024-02-07 14:28:00,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:28:00,586 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_93-evilcollapse_racefree.i[47038,47051] [2024-02-07 14:28:00,601 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,602 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,602 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,604 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:28:00,669 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:28:00,729 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_93-evilcollapse_racefree.i[47038,47051] Start Parsing Local [2024-02-07 14:28:00,759 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,760 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,761 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,761 WARN L1556 CHandler]: Possible shadowing of function new [2024-02-07 14:28:00,765 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:28:00,767 WARN L423 MainDispatcher]: Unable to annotate hvalue1 = __VERIFIER_nondet_int() with a witness entry 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 14:28:00,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:28:00,887 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:28:00,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00 WrapperNode [2024-02-07 14:28:00,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:28:00,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:28:00,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:28:00,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:28:00,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,949 INFO L138 Inliner]: procedures = 280, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 248 [2024-02-07 14:28:00,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:28:00,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:28:00,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:28:00,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:28:00,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,990 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 2, 5, 21]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 1, 0, 13]. [2024-02-07 14:28:00,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:00,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:28:01,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:28:01,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:28:01,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:28:01,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (1/1) ... [2024-02-07 14:28:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:28:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:01,057 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 14:28:01,062 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 14:28:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:28:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:28:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:28:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:28:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:28:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:28:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 14:28:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 14:28:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:28:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:28:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:28:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:28:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:28:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:28:01,099 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 14:28:01,255 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:28:01,258 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:28:01,686 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:28:01,688 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:28:01,967 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:28:01,968 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 14:28:01,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:28:01 BoogieIcfgContainer [2024-02-07 14:28:01,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:28:01,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:28:01,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:28:01,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:28:01,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:27:58" (1/4) ... [2024-02-07 14:28:01,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f9e06 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:28:01, skipping insertion in model container [2024-02-07 14:28:01,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:27:59" (2/4) ... [2024-02-07 14:28:01,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:28:01, skipping insertion in model container [2024-02-07 14:28:01,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:28:00" (3/4) ... [2024-02-07 14:28:01,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:28:01, skipping insertion in model container [2024-02-07 14:28:01,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:28:01" (4/4) ... [2024-02-07 14:28:01,979 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-02-07 14:28:01,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:28:01,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-07 14:28:01,999 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:28:02,090 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:28:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 85 transitions, 177 flow [2024-02-07 14:28:02,211 INFO L124 PetriNetUnfolderBase]: 18/89 cut-off events. [2024-02-07 14:28:02,212 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:28:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 18/89 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2024-02-07 14:28:02,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 85 transitions, 177 flow [2024-02-07 14:28:02,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 84 transitions, 175 flow [2024-02-07 14:28:02,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:28:02,245 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;@749d410, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:28:02,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-07 14:28:02,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:28:02,249 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 14:28:02,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:28:02,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:02,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:28:02,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:02,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash 689057, now seen corresponding path program 1 times [2024-02-07 14:28:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200185197] [2024-02-07 14:28:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:02,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:02,457 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 14:28:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200185197] [2024-02-07 14:28:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200185197] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:02,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:28:02,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596133789] [2024-02-07 14:28:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:02,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:28:02,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:02,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:28:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:28:02,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-07 14:28:02,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 14:28:02,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:02,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-07 14:28:02,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:02,773 INFO L124 PetriNetUnfolderBase]: 139/419 cut-off events. [2024-02-07 14:28:02,774 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:28:02,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 419 events. 139/419 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1931 event pairs, 114 based on Foata normal form. 50/405 useless extension candidates. Maximal degree in co-relation 641. Up to 291 conditions per place. [2024-02-07 14:28:02,779 INFO L140 encePairwiseOnDemand]: 69/85 looper letters, 50 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-07 14:28:02,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 269 flow [2024-02-07 14:28:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:28:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:28:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-02-07 14:28:02,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-02-07 14:28:02,796 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 175 flow. Second operand 3 states and 147 transitions. [2024-02-07 14:28:02,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 269 flow [2024-02-07 14:28:02,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 269 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:28:02,806 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 169 flow [2024-02-07 14:28:02,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-02-07 14:28:02,811 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2024-02-07 14:28:02,811 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 169 flow [2024-02-07 14:28:02,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 14:28:02,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:02,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:28:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:28:02,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:02,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash -946426337, now seen corresponding path program 1 times [2024-02-07 14:28:02,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:02,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051484993] [2024-02-07 14:28:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:02,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:28:02,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999084323] [2024-02-07 14:28:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:02,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:28:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:02,872 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 14:28:02,902 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 14:28:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:03,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:28:03,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:28:03,067 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 14:28:03,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:28:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051484993] [2024-02-07 14:28:03,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:28:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999084323] [2024-02-07 14:28:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999084323] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:03,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:28:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207630649] [2024-02-07 14:28:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:28:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:28:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:28:03,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-02-07 14:28:03,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 14:28:03,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:03,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-02-07 14:28:03,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:03,380 INFO L124 PetriNetUnfolderBase]: 139/418 cut-off events. [2024-02-07 14:28:03,380 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:28:03,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 418 events. 139/418 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1933 event pairs, 114 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 706. Up to 292 conditions per place. [2024-02-07 14:28:03,383 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 49 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-02-07 14:28:03,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 285 flow [2024-02-07 14:28:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:28:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:28:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-02-07 14:28:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647058823529412 [2024-02-07 14:28:03,386 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 169 flow. Second operand 4 states and 158 transitions. [2024-02-07 14:28:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 285 flow [2024-02-07 14:28:03,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:28:03,388 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 191 flow [2024-02-07 14:28:03,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-02-07 14:28:03,389 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2024-02-07 14:28:03,389 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 191 flow [2024-02-07 14:28:03,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 14:28:03,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:03,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 14:28:03,408 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 14:28:03,604 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 14:28:03,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:03,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash 725556753, now seen corresponding path program 1 times [2024-02-07 14:28:03,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360389960] [2024-02-07 14:28:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:03,676 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 14:28:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360389960] [2024-02-07 14:28:03,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360389960] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:03,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:28:03,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735653201] [2024-02-07 14:28:03,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:03,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:28:03,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:03,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:28:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:28:03,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 85 [2024-02-07 14:28:03,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 14:28:03,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:03,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 85 [2024-02-07 14:28:03,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:03,876 INFO L124 PetriNetUnfolderBase]: 139/423 cut-off events. [2024-02-07 14:28:03,877 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 14:28:03,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 423 events. 139/423 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1943 event pairs, 114 based on Foata normal form. 2/365 useless extension candidates. Maximal degree in co-relation 714. Up to 295 conditions per place. [2024-02-07 14:28:03,882 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 48 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-02-07 14:28:03,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 313 flow [2024-02-07 14:28:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:28:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:28:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-02-07 14:28:03,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-02-07 14:28:03,886 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 191 flow. Second operand 3 states and 134 transitions. [2024-02-07 14:28:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 313 flow [2024-02-07 14:28:03,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:28:03,890 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 214 flow [2024-02-07 14:28:03,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-02-07 14:28:03,892 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-02-07 14:28:03,892 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 214 flow [2024-02-07 14:28:03,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 14:28:03,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:03,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:03,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:28:03,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:03,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash 725555341, now seen corresponding path program 1 times [2024-02-07 14:28:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:03,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916839242] [2024-02-07 14:28:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:03,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:28:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549994098] [2024-02-07 14:28:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:28:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:03,940 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 14:28:03,948 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 14:28:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:04,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-07 14:28:04,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:28:04,149 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 14:28:04,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 14:28:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916839242] [2024-02-07 14:28:04,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:28:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549994098] [2024-02-07 14:28:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549994098] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:28:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:28:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:28:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724951516] [2024-02-07 14:28:04,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:28:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:28:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:28:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:28:04,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 14:28:04,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 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 14:28:04,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:04,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 14:28:04,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:04,727 INFO L124 PetriNetUnfolderBase]: 139/428 cut-off events. [2024-02-07 14:28:04,728 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-02-07 14:28:04,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 428 events. 139/428 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1963 event pairs, 114 based on Foata normal form. 4/370 useless extension candidates. Maximal degree in co-relation 716. Up to 282 conditions per place. [2024-02-07 14:28:04,730 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 49 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-02-07 14:28:04,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 362 flow [2024-02-07 14:28:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:28:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:28:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-02-07 14:28:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403921568627451 [2024-02-07 14:28:04,733 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 214 flow. Second operand 6 states and 206 transitions. [2024-02-07 14:28:04,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 362 flow [2024-02-07 14:28:04,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:28:04,739 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 255 flow [2024-02-07 14:28:04,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-02-07 14:28:04,741 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2024-02-07 14:28:04,741 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 255 flow [2024-02-07 14:28:04,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 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 14:28:04,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:04,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 14:28:04,763 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 14:28:04,957 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 14:28:04,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:04,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1550521523, now seen corresponding path program 1 times [2024-02-07 14:28:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611228574] [2024-02-07 14:28:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:04,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:05,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:28:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178076965] [2024-02-07 14:28:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:05,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:28:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:05,018 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 14:28:05,041 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 14:28:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:28:05,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-07 14:28:05,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:28:05,289 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 14:28:05,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:28:05,586 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 14:28:05,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:05,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611228574] [2024-02-07 14:28:05,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:28:05,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178076965] [2024-02-07 14:28:05,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178076965] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:28:05,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 14:28:05,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-02-07 14:28:05,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741756431] [2024-02-07 14:28:05,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 14:28:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 14:28:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 14:28:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-02-07 14:28:05,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 14:28:05,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 14:28:05,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:05,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 14:28:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:06,447 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-02-07 14:28:06,448 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-07 14:28:06,448 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 14:28:06,448 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 14 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2024-02-07 14:28:06,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 179 flow [2024-02-07 14:28:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:28:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:28:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-02-07 14:28:06,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33464052287581697 [2024-02-07 14:28:06,450 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 255 flow. Second operand 9 states and 256 transitions. [2024-02-07 14:28:06,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 179 flow [2024-02-07 14:28:06,451 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 14:28:06,451 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 95 flow [2024-02-07 14:28:06,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, 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 14:28:06,452 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -44 predicate places. [2024-02-07 14:28:06,452 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 95 flow [2024-02-07 14:28:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 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 14:28:06,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:06,453 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1] [2024-02-07 14:28:06,471 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 14:28:06,666 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 14:28:06,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1751440205, now seen corresponding path program 2 times [2024-02-07 14:28:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:06,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078273303] [2024-02-07 14:28:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:06,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:28:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785549240] [2024-02-07 14:28:06,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:28:06,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:28:06,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:06,765 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 14:28:06,793 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 14:28:07,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:28:07,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:28:07,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-07 14:28:07,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:28:07,465 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 14:28:07,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:28:08,192 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 14:28:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:28:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078273303] [2024-02-07 14:28:08,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 14:28:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785549240] [2024-02-07 14:28:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785549240] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:28:08,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 14:28:08,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-02-07 14:28:08,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065139954] [2024-02-07 14:28:08,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 14:28:08,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-07 14:28:08,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:28:08,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-07 14:28:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-02-07 14:28:08,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 14:28:08,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 95 flow. Second operand has 18 states, 18 states have (on average 27.27777777777778) internal successors, (491), 18 states have internal predecessors, (491), 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 14:28:08,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:28:08,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 14:28:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:28:10,810 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-02-07 14:28:10,810 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-02-07 14:28:10,810 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 14:28:10,811 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 30 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2024-02-07 14:28:10,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 359 flow [2024-02-07 14:28:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-07 14:28:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-07 14:28:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 480 transitions. [2024-02-07 14:28:10,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33217993079584773 [2024-02-07 14:28:10,814 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 95 flow. Second operand 17 states and 480 transitions. [2024-02-07 14:28:10,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 359 flow [2024-02-07 14:28:10,816 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 14:28:10,817 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 199 flow [2024-02-07 14:28:10,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, 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 14:28:10,818 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -23 predicate places. [2024-02-07 14:28:10,818 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 199 flow [2024-02-07 14:28:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.27777777777778) internal successors, (491), 18 states have internal predecessors, (491), 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 14:28:10,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:28:10,819 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1] [2024-02-07 14:28:10,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-07 14:28:11,035 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 14:28:11,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-07 14:28:11,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:28:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1798522035, now seen corresponding path program 3 times [2024-02-07 14:28:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:28:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639465235] [2024-02-07 14:28:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:28:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:28:11,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 14:28:11,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677558003] [2024-02-07 14:28:11,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:28:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:28:11,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:28:11,209 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 14:28:11,228 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