./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/divbin_valuebound1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f1d7dc9d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i ../results/automizer-verification-files/SV-COMP24_unreach-call/divbin_valuebound1.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:33:48,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:33:48,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:33:48,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:33:48,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:33:48,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:33:48,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:33:48,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:33:48,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:33:48,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:33:48,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:33:48,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:33:48,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:33:48,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:33:48,098 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:33:48,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:33:48,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:33:48,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:33:48,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:33:48,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:33:48,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:33:48,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:33:48,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:33:48,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:33:48,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:33:48,102 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:33:48,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:33:48,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:33:48,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:33:48,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:33:48,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:33:48,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:33:48,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:33:48,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:33:48,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:33:48,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:33:48,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:33:48,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:33:48,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:33:48,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:33:48,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:33:48,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:33:48,108 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:33:48,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:33:48,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:33:48,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:33:48,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:33:48,391 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:33:48,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-20 13:33:49,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:33:49,997 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:33:49,998 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-20 13:33:50,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f3a2e6a9b/30ec6a4bd54b4ec29f39c834cb33b97b/FLAG2831d2abf [2024-09-20 13:33:50,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f3a2e6a9b/30ec6a4bd54b4ec29f39c834cb33b97b [2024-09-20 13:33:50,017 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:33:50,018 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:33:50,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/divbin_valuebound1.yml/witness-2.1.yml [2024-09-20 13:33:50,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:33:50,065 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:33:50,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:33:50,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:33:50,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:33:50,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:33:50" (1/2) ... [2024-09-20 13:33:50,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8ddbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:33:50" (1/2) ... [2024-09-20 13:33:50,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8ef8d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:33:50" (2/2) ... [2024-09-20 13:33:50,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8ddbf1 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:33:50" (2/2) ... [2024-09-20 13:33:50,082 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:33:50,083 INFO L1541 ArrayList]: Loop invariant at [L41-L50] ((((((((B == 1) && (b == 1)) && (r <= 0)) && (r == A)) && (q == 0)) || ((((0 <= 0) && ((0 + 0) <= (0 + 0))) && (A == ((r + ((unsigned long long) b * q)) % 4294967296))) && (B == b))) || ((((((B == 1) && (r == A)) && (0 <= ((2 * ((((-2147483648 * 0) + (b / 2)) + ((long long) -1 * B)) / 4294967296)) + 0))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0))) || (((((B == 1) && (b == 1)) && (r <= 0)) && (A == (((long long) r + 1) % 4294967296))) && (q == 1))) [2024-09-20 13:33:50,083 INFO L1541 ArrayList]: Loop invariant at [L37-L40] (((((((B == 1) && (r == A)) && (0 <= ((2 * ((((-2147483648 * 0) + (b / 2)) + ((long long) -1 * B)) / 4294967296)) + 0))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0)) || ((((((b == 1) && (r == A)) && ((0 + 0) <= (0 + 0))) && (A <= 1)) && (B == b)) && (q == 0))) [2024-09-20 13:33:50,083 INFO L1541 ArrayList]: Function contract at [L15]: requires null, ensures (\old(cond) != 0) [2024-09-20 13:33:50,083 INFO L1541 ArrayList]: Function contract at [L18]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-20 13:33:50,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:33:50,253 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2024-09-20 13:33:50,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:33:50,276 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-20 13:33:50,304 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] Start Parsing Local Start Parsing Local [2024-09-20 13:33:50,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:33:50,338 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:33:50,338 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50 WrapperNode [2024-09-20 13:33:50,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:33:50,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:33:50,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:33:50,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:33:50,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,385 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2024-09-20 13:33:50,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:33:50,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:33:50,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:33:50,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:33:50,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,409 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure assume_abort_if_not is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-20 13:33:50,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:33:50,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:33:50,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:33:50,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:33:50,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (1/1) ... [2024-09-20 13:33:50,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:33:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:33:50,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 13:33:50,456 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 13:33:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:33:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 13:33:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 13:33:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-20 13:33:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:33:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:33:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:33:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:33:50,566 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:33:50,568 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:33:50,857 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-20 13:33:50,883 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-09-20 13:33:50,883 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:33:50,907 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:33:50,909 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 13:33:50,909 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:33:50 BoogieIcfgContainer [2024-09-20 13:33:50,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:33:50,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:33:50,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:33:50,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:33:50,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:33:50" (1/4) ... [2024-09-20 13:33:50,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:33:50" (2/4) ... [2024-09-20 13:33:50,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36f14 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:33:50" (3/4) ... [2024-09-20 13:33:50,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a36f14 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:33:50, skipping insertion in model container [2024-09-20 13:33:50,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:33:50" (4/4) ... [2024-09-20 13:33:50,918 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2024-09-20 13:33:50,932 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:33:50,932 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-20 13:33:50,965 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:33:50,970 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@74d7f1a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:33:50,971 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-20 13:33:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.7) internal successors, (34), 25 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:33:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-20 13:33:50,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:33:50,981 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-20 13:33:50,981 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting assume_abort_if_notErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:33:50,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:33:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 118866251, now seen corresponding path program 1 times [2024-09-20 13:33:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:33:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916513768] [2024-09-20 13:33:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:33:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:33:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:33:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916513768] [2024-09-20 13:33:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916513768] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:33:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:33:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:33:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492906002] [2024-09-20 13:33:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:33:51,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:33:51,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:33:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:33:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:33:51,219 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.7) internal successors, (34), 25 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:33:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:33:51,273 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-09-20 13:33:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:33:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-20 13:33:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:33:51,281 INFO L225 Difference]: With dead ends: 33 [2024-09-20 13:33:51,281 INFO L226 Difference]: Without dead ends: 31 [2024-09-20 13:33:51,282 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:33:51,285 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:33:51,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:33:51,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-20 13:33:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-20 13:33:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.368421052631579) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:33:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-09-20 13:33:51,317 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 5 [2024-09-20 13:33:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:33:51,318 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-09-20 13:33:51,318 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:33:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-09-20 13:33:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-20 13:33:51,319 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:33:51,320 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:33:51,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:33:51,320 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:33:51,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:33:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1837307530, now seen corresponding path program 1 times [2024-09-20 13:33:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:33:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112663039] [2024-09-20 13:33:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:33:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:33:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:33:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 13:33:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 13:33:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 13:33:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:33:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112663039] [2024-09-20 13:33:52,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112663039] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:33:52,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041255906] [2024-09-20 13:33:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:52,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:52,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:33:52,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:33:52,341 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:33:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:52,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 13:33:52,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:33:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 13:33:52,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:33:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 13:33:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041255906] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:33:52,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:33:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2024-09-20 13:33:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185292499] [2024-09-20 13:33:52,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:33:52,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 13:33:52,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:33:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 13:33:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:33:52,808 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 13:33:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:33:52,986 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-20 13:33:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:33:52,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 24 [2024-09-20 13:33:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:33:52,987 INFO L225 Difference]: With dead ends: 40 [2024-09-20 13:33:52,987 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 13:33:52,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-09-20 13:33:52,988 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:33:52,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 74 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:33:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 13:33:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-09-20 13:33:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 29 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:33:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-09-20 13:33:52,999 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-09-20 13:33:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:33:53,002 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-09-20 13:33:53,002 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 13:33:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-09-20 13:33:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 13:33:53,005 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:33:53,005 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:33:53,025 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 13:33:53,206 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:53,206 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:33:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:33:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash -165357202, now seen corresponding path program 1 times [2024-09-20 13:33:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:33:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420277897] [2024-09-20 13:33:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:33:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:33:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:33:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 13:33:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 13:33:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:33:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:33:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420277897] [2024-09-20 13:33:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420277897] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:33:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308144278] [2024-09-20 13:33:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:33:53,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:33:53,744 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:33:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:53,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 13:33:53,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:33:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-20 13:33:54,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:33:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:33:54,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308144278] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:33:54,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:33:54,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 4] total 11 [2024-09-20 13:33:54,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596047490] [2024-09-20 13:33:54,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:33:54,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 13:33:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:33:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 13:33:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-09-20 13:33:54,517 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-20 13:33:58,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:02,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:06,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:10,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:14,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:18,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:22,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:26,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:30,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:34:34,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:38,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:42,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:46,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:50,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:54,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:34:59,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:03,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:07,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:11,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:15,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:19,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:23,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:27,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:31,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 13:35:35,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:35:39,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:35:43,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:35:47,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 13:35:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:35:47,374 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2024-09-20 13:35:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:35:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 27 [2024-09-20 13:35:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:35:47,376 INFO L225 Difference]: With dead ends: 53 [2024-09-20 13:35:47,376 INFO L226 Difference]: Without dead ends: 53 [2024-09-20 13:35:47,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:35:47,377 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 21 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.7s IncrementalHoareTripleChecker+Time [2024-09-20 13:35:47,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 117 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 165 Invalid, 28 Unknown, 0 Unchecked, 112.7s Time] [2024-09-20 13:35:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-20 13:35:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2024-09-20 13:35:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 13:35:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-09-20 13:35:47,384 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 27 [2024-09-20 13:35:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:35:47,385 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-09-20 13:35:47,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-20 13:35:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-09-20 13:35:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-20 13:35:47,387 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:35:47,387 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:35:47,405 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:35:47,588 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:35:47,589 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:35:47,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:35:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 8600811, now seen corresponding path program 1 times [2024-09-20 13:35:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:35:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458230631] [2024-09-20 13:35:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:35:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:35:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:35:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:35:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 13:35:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 13:35:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:35:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:35:47,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458230631] [2024-09-20 13:35:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458230631] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:35:47,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:35:47,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:35:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590731416] [2024-09-20 13:35:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:35:47,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:35:47,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:35:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:35:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:35:47,685 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 13:35:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:35:47,698 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2024-09-20 13:35:47,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:35:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-09-20 13:35:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:35:47,701 INFO L225 Difference]: With dead ends: 44 [2024-09-20 13:35:47,702 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 13:35:47,702 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:35:47,702 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:35:47,703 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:35:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 13:35:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-20 13:35:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 13:35:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2024-09-20 13:35:47,713 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 32 [2024-09-20 13:35:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:35:47,713 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2024-09-20 13:35:47,713 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 13:35:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2024-09-20 13:35:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-20 13:35:47,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:35:47,715 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:35:47,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 13:35:47,715 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:35:47,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:35:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash 8600972, now seen corresponding path program 1 times [2024-09-20 13:35:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:35:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728367114] [2024-09-20 13:35:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:35:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:35:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-20 13:35:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:35:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 13:35:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 13:35:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:35:47,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:35:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728367114] [2024-09-20 13:35:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728367114] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:35:47,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:35:47,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:35:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316854461] [2024-09-20 13:35:47,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:35:47,789 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:35:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:35:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:35:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:35:47,789 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 13:35:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:35:47,808 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-09-20 13:35:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:35:47,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-09-20 13:35:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:35:47,810 INFO L225 Difference]: With dead ends: 43 [2024-09-20 13:35:47,810 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 13:35:47,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:35:47,810 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:35:47,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:35:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 13:35:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-20 13:35:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 32 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 13:35:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2024-09-20 13:35:47,820 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 32 [2024-09-20 13:35:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:35:47,821 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2024-09-20 13:35:47,822 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 13:35:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2024-09-20 13:35:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-20 13:35:47,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:35:47,823 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:35:47,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-20 13:35:47,823 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-20 13:35:47,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:35:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1249567789, now seen corresponding path program 1 times [2024-09-20 13:35:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:35:47,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608231256] [2024-09-20 13:35:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:35:47,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:35:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:35:47,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220084040] [2024-09-20 13:35:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:35:47,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:35:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:35:47,854 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:35:47,854 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:35:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:35:47,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:35:47,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:36:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:36:09,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:36:29,844 WARN L293 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:36:33,857 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse0 (not (= (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296) 1))) (.cse1 (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse4)) (.cse3 (not (= (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296) 0)))) (and (or .cse0 .cse1 (not (= .cse2 1)) .cse3) (or (< 2 .cse2) .cse0 .cse1 .cse3))) (< .cse2 (+ .cse4 1)))) is different from true [2024-09-20 13:36:45,989 WARN L293 SmtUtils]: Spent 12.08s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:37:02,012 WARN L293 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:37:26,058 WARN L293 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:37:42,079 WARN L293 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:38:02,152 WARN L293 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 13:38:22,243 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)