./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 e7c74aec Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:07:48,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:07:48,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:07:48,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:07:48,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:07:49,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:07:49,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:07:49,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:07:49,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:07:49,050 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:07:49,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:07:49,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:07:49,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:07:49,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:07:49,053 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:07:49,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:07:49,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:07:49,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:07:49,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:07:49,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:07:49,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:07:49,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:07:49,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:07:49,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:07:49,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:07:49,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:07:49,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:07:49,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:07:49,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:07:49,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:07:49,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:07:49,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:07:49,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:49,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:07:49,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:07:49,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:07:49,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:07:49,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:07:49,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:07:49,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:07:49,059 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:07:49,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:07:49,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:07:49,059 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:07:49,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:07:49,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:07:49,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:07:49,459 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:07:49,460 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:07:49,461 INFO L431 ainManager$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 19:07:49,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:07:49,574 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:07:49,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-07 19:07:51,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:07:51,443 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:07:51,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-02-07 19:07:51,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fff91f79/c656ee6cf2674531b1f69d5a72e7106c/FLAG03bfa7383 [2024-02-07 19:07:51,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fff91f79/c656ee6cf2674531b1f69d5a72e7106c [2024-02-07 19:07:51,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:07:51,475 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:07:51,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:51,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:07:51,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:07:51,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:49" (1/2) ... [2024-02-07 19:07:51,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105eedcc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:51, skipping insertion in model container [2024-02-07 19:07:51,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:49" (1/2) ... [2024-02-07 19:07:51,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@279be9da and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:07:51, skipping insertion in model container [2024-02-07 19:07:51,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:51" (2/2) ... [2024-02-07 19:07:51,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105eedcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:51, skipping insertion in model container [2024-02-07 19:07:51,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:07:51" (2/2) ... [2024-02-07 19:07:51,491 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:07:51,543 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:07:51,544 INFO L76 edCorrectnessWitness]: Location invariant before [L1036-L1036] 7 == d [2024-02-07 19:07:51,544 INFO L76 edCorrectnessWitness]: Location invariant before [L1075-L1075] (0 <= i) && (i <= 9) [2024-02-07 19:07:51,544 INFO L76 edCorrectnessWitness]: Location invariant before [L1039-L1039] 7 == d [2024-02-07 19:07:51,544 INFO L76 edCorrectnessWitness]: Location invariant before [L1074-L1074] (0 <= i) && (i <= 9) [2024-02-07 19:07:51,544 INFO L76 edCorrectnessWitness]: Location invariant before [L1040-L1040] 7 == d [2024-02-07 19:07:51,544 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 19:07:51,545 INFO L76 edCorrectnessWitness]: Location invariant after [L1036-L1036] 7 == d [2024-02-07 19:07:51,545 INFO L76 edCorrectnessWitness]: Location invariant before [L1037-L1037] (0 <= hvalue1) && (7 == d) [2024-02-07 19:07:51,545 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 19:07:51,545 INFO L76 edCorrectnessWitness]: Location invariant before [L1024-L1024] (0 <= x) && (x <= 261) [2024-02-07 19:07:51,545 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 19:07:51,545 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 19:07:51,545 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 19:07:51,545 INFO L76 edCorrectnessWitness]: Location invariant before [L1057-L1057] j <= 9 [2024-02-07 19:07:51,545 INFO L76 edCorrectnessWitness]: Location invariant before [L1065-L1065] j <= 9 [2024-02-07 19:07:51,545 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 19:07:51,609 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:07:52,227 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 19:07:52,260 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,260 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,261 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,262 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,306 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:52,334 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:07:52,391 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 19:07:52,448 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,450 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,450 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,451 WARN L1564 CHandler]: Possible shadowing of function new [2024-02-07 19:07:52,452 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:07:52,456 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 19:07:52,481 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:07:52,573 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:07:52,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52 WrapperNode [2024-02-07 19:07:52,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:07:52,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:52,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:07:52,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:07:52,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,693 INFO L138 Inliner]: procedures = 280, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 248 [2024-02-07 19:07:52,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:07:52,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:07:52,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:07:52,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:07:52,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,706 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,760 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 21, 5, 2]. 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, 13, 0, 1]. [2024-02-07 19:07:52,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:07:52,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:07:52,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:07:52,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:07:52,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (1/1) ... [2024-02-07 19:07:52,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:07:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:52,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-07 19:07:52,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-07 19:07:52,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:07:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:07:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:07:52,984 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:07:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:07:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:07:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:07:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:07:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:07:52,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:07:52,987 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:07:53,212 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:07:53,214 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:07:53,760 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:07:53,760 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:07:54,132 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:07:54,132 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 19:07:54,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:54 BoogieIcfgContainer [2024-02-07 19:07:54,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:07:54,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:07:54,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:07:54,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:07:54,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:07:49" (1/4) ... [2024-02-07 19:07:54,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a5fc4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:07:54, skipping insertion in model container [2024-02-07 19:07:54,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:07:51" (2/4) ... [2024-02-07 19:07:54,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a5fc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:54, skipping insertion in model container [2024-02-07 19:07:54,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:07:52" (3/4) ... [2024-02-07 19:07:54,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a5fc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:07:54, skipping insertion in model container [2024-02-07 19:07:54,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:07:54" (4/4) ... [2024-02-07 19:07:54,169 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-02-07 19:07:54,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:07:54,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-07 19:07:54,187 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:07:54,242 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:07:54,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 85 transitions, 177 flow [2024-02-07 19:07:54,329 INFO L124 PetriNetUnfolderBase]: 18/89 cut-off events. [2024-02-07 19:07:54,329 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:54,333 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 19:07:54,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 85 transitions, 177 flow [2024-02-07 19:07:54,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 84 transitions, 175 flow [2024-02-07 19:07:54,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:07:54,366 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;@52addf25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:07:54,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-07 19:07:54,369 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:07:54,369 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-02-07 19:07:54,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:07:54,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:54,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 19:07:54,370 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 19:07:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash 689057, now seen corresponding path program 1 times [2024-02-07 19:07:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845980355] [2024-02-07 19:07:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845980355] [2024-02-07 19:07:54,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845980355] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:54,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:54,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:07:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865075643] [2024-02-07 19:07:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:54,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-07 19:07:54,840 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 19:07:54,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:54,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-07 19:07:54,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:55,159 INFO L124 PetriNetUnfolderBase]: 139/419 cut-off events. [2024-02-07 19:07:55,160 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:07:55,161 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 19:07:55,187 INFO L140 encePairwiseOnDemand]: 69/85 looper letters, 50 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-07 19:07:55,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 269 flow [2024-02-07 19:07:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-02-07 19:07:55,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-02-07 19:07:55,219 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 175 flow. Second operand 3 states and 147 transitions. [2024-02-07 19:07:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 269 flow [2024-02-07 19:07:55,222 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 19:07:55,237 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 169 flow [2024-02-07 19:07:55,239 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 19:07:55,242 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2024-02-07 19:07:55,243 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 169 flow [2024-02-07 19:07:55,243 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 19:07:55,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:55,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:07:55,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:07:55,245 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 19:07:55,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash -946426337, now seen corresponding path program 1 times [2024-02-07 19:07:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:55,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549462441] [2024-02-07 19:07:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:55,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376366736] [2024-02-07 19:07:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:55,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:55,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:55,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:07:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:55,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 19:07:55,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:55,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:55,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549462441] [2024-02-07 19:07:55,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376366736] [2024-02-07 19:07:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376366736] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:55,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:55,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:07:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165369777] [2024-02-07 19:07:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:07:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:07:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:07:55,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-02-07 19:07:55,563 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 19:07:55,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:55,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-02-07 19:07:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:56,302 INFO L124 PetriNetUnfolderBase]: 139/418 cut-off events. [2024-02-07 19:07:56,303 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:07:56,304 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 19:07:56,328 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 49 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-02-07 19:07:56,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 285 flow [2024-02-07 19:07:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:07:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:07:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-02-07 19:07:56,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647058823529412 [2024-02-07 19:07:56,334 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 169 flow. Second operand 4 states and 158 transitions. [2024-02-07 19:07:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 285 flow [2024-02-07 19:07:56,336 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 19:07:56,337 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 191 flow [2024-02-07 19:07:56,338 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 19:07:56,338 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2024-02-07 19:07:56,339 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 191 flow [2024-02-07 19:07:56,341 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 19:07:56,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:56,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:07:56,357 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 19:07:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:56,555 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 19:07:56,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash 725556753, now seen corresponding path program 1 times [2024-02-07 19:07:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:56,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461695154] [2024-02-07 19:07:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:56,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461695154] [2024-02-07 19:07:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461695154] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:56,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:56,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:07:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994875884] [2024-02-07 19:07:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:07:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:07:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:07:56,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 85 [2024-02-07 19:07:56,713 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 19:07:56,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:56,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 85 [2024-02-07 19:07:56,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:57,067 INFO L124 PetriNetUnfolderBase]: 139/423 cut-off events. [2024-02-07 19:07:57,068 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 19:07:57,071 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 19:07:57,089 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 48 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-02-07 19:07:57,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 313 flow [2024-02-07 19:07:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:07:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:07:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-02-07 19:07:57,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-02-07 19:07:57,091 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 191 flow. Second operand 3 states and 134 transitions. [2024-02-07 19:07:57,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 313 flow [2024-02-07 19:07:57,093 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 19:07:57,094 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 214 flow [2024-02-07 19:07:57,094 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 19:07:57,095 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-02-07 19:07:57,095 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 214 flow [2024-02-07 19:07:57,095 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 19:07:57,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:57,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:07:57,096 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 19:07:57,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash 725555341, now seen corresponding path program 1 times [2024-02-07 19:07:57,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:57,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554478856] [2024-02-07 19:07:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:57,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465347188] [2024-02-07 19:07:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:57,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:57,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:57,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:57,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-07 19:07:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:57,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-07 19:07:57,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:57,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-07 19:07:57,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554478856] [2024-02-07 19:07:57,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465347188] [2024-02-07 19:07:57,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465347188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:07:57,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:07:57,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:07:57,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174853204] [2024-02-07 19:07:57,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:07:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:07:57,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:07:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:07:57,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 19:07:57,468 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 19:07:57,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:57,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 19:07:57,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:07:58,045 INFO L124 PetriNetUnfolderBase]: 139/428 cut-off events. [2024-02-07 19:07:58,045 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-02-07 19:07:58,046 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 19:07:58,047 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 49 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-02-07 19:07:58,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 362 flow [2024-02-07 19:07:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:07:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:07:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-02-07 19:07:58,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403921568627451 [2024-02-07 19:07:58,048 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 214 flow. Second operand 6 states and 206 transitions. [2024-02-07 19:07:58,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 362 flow [2024-02-07 19:07:58,049 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 19:07:58,050 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 255 flow [2024-02-07 19:07:58,051 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 19:07:58,051 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2024-02-07 19:07:58,051 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 255 flow [2024-02-07 19:07:58,051 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 19:07:58,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:07:58,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:07:58,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-07 19:07:58,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-07 19:07:58,269 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 19:07:58,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:07:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1550521523, now seen corresponding path program 1 times [2024-02-07 19:07:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:07:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600654890] [2024-02-07 19:07:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:07:58,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:07:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949486719] [2024-02-07 19:07:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:07:58,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:07:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:07:58,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:07:58,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-07 19:07:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:07:58,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2024-02-07 19:07:58,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:07:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:58,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:07:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:07:59,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:07:59,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600654890] [2024-02-07 19:07:59,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:07:59,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949486719] [2024-02-07 19:07:59,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949486719] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:07:59,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 19:07:59,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-02-07 19:07:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115040598] [2024-02-07 19:07:59,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 19:07:59,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 19:07:59,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:07:59,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 19:07:59,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-02-07 19:07:59,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 19:07:59,087 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 19:07:59,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:07:59,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 19:07:59,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:00,568 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-02-07 19:08:00,568 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-07 19:08:00,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 23 events. 1/23 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 8/31 useless extension candidates. Maximal degree in co-relation 89. Up to 7 conditions per place. [2024-02-07 19:08:00,568 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 14 selfloop transitions, 9 changer transitions 0/23 dead transitions. [2024-02-07 19:08:00,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 179 flow [2024-02-07 19:08:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:08:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:08:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-02-07 19:08:00,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33464052287581697 [2024-02-07 19:08:00,579 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 255 flow. Second operand 9 states and 256 transitions. [2024-02-07 19:08:00,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 179 flow [2024-02-07 19:08:00,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 23 transitions, 118 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-07 19:08:00,581 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 95 flow [2024-02-07 19:08:00,581 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 19:08:00,581 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -44 predicate places. [2024-02-07 19:08:00,581 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 95 flow [2024-02-07 19:08:00,582 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 19:08:00,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:00,582 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1] [2024-02-07 19:08:00,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-07 19:08:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:00,783 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 19:08:00,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1751440205, now seen corresponding path program 2 times [2024-02-07 19:08:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376740409] [2024-02-07 19:08:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:00,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:08:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883228240] [2024-02-07 19:08:00,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 19:08:00,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:00,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:08:00,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-07 19:08:01,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 19:08:01,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 19:08:01,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 29 conjunts are in the unsatisfiable core [2024-02-07 19:08:01,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:08:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:01,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:08:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:02,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:02,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376740409] [2024-02-07 19:08:02,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-07 19:08:02,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883228240] [2024-02-07 19:08:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883228240] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:08:02,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-02-07 19:08:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-02-07 19:08:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099360479] [2024-02-07 19:08:02,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-02-07 19:08:02,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-07 19:08:02,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-07 19:08:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-02-07 19:08:02,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-07 19:08:02,776 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 19:08:02,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:02,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-07 19:08:02,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:07,742 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-02-07 19:08:07,743 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-02-07 19:08:07,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 47 events. 1/47 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 8/55 useless extension candidates. Maximal degree in co-relation 179. Up to 16 conditions per place. [2024-02-07 19:08:07,743 INFO L140 encePairwiseOnDemand]: 80/85 looper letters, 30 selfloop transitions, 17 changer transitions 0/47 dead transitions. [2024-02-07 19:08:07,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 359 flow [2024-02-07 19:08:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-07 19:08:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-07 19:08:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 480 transitions. [2024-02-07 19:08:07,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33217993079584773 [2024-02-07 19:08:07,746 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 95 flow. Second operand 17 states and 480 transitions. [2024-02-07 19:08:07,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 359 flow [2024-02-07 19:08:07,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 304 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-02-07 19:08:07,751 INFO L231 Difference]: Finished difference. Result has 47 places, 23 transitions, 199 flow [2024-02-07 19:08:07,752 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 19:08:07,754 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -23 predicate places. [2024-02-07 19:08:07,754 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 199 flow [2024-02-07 19:08:07,755 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 19:08:07,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:07,755 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,785 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 19:08:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:07,971 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 19:08:07,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1798522035, now seen corresponding path program 3 times [2024-02-07 19:08:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006568596] [2024-02-07 19:08:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:08,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-07 19:08:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180866886] [2024-02-07 19:08:08,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 19:08:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:08:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:08,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:08:08,290 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