/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat1-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:48:27,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:48:27,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:48:28,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:48:28,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 21:48:28,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 21:48:28,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 21:48:28,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 21:48:28,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 21:48:28,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 21:48:28,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 21:48:28,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 21:48:28,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 21:48:28,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 21:48:28,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 21:48:28,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 21:48:28,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 21:48:28,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:48:28,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:48:28,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:48:28,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:48:28,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:48:28,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:48:28,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:48:28,107 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:48:28,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:48:28,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:48:28,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:48:28,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:48:28,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:48:28,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:48:28,109 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:48:28,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:48:28,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:48:28,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:48:28,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:48:28,341 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:48:28,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat1-ll.c [2022-01-31 21:48:28,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7eb058e/681c120309464ce09ca54e9f74f88bdf/FLAG0a258247f [2022-01-31 21:48:28,816 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:48:28,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c [2022-01-31 21:48:28,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7eb058e/681c120309464ce09ca54e9f74f88bdf/FLAG0a258247f [2022-01-31 21:48:28,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7eb058e/681c120309464ce09ca54e9f74f88bdf [2022-01-31 21:48:28,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:48:28,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:48:28,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:48:28,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:48:28,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:48:28,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:48:28" (1/1) ... [2022-01-31 21:48:28,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79608864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:28, skipping insertion in model container [2022-01-31 21:48:28,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:48:28" (1/1) ... [2022-01-31 21:48:28,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:48:28,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:48:29,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c[535,548] [2022-01-31 21:48:29,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:48:29,041 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:48:29,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat1-ll.c[535,548] [2022-01-31 21:48:29,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:48:29,070 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:48:29,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29 WrapperNode [2022-01-31 21:48:29,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:48:29,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:48:29,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:48:29,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:48:29,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:48:29,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:48:29,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:48:29,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:48:29,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (1/1) ... [2022-01-31 21:48:29,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:48:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:48:29,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 21:48:29,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 21:48:29,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:48:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:48:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:48:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:48:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:48:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:48:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:48:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:48:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:48:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:48:29,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 21:48:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:48:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:48:29,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:48:29,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:48:29,254 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:48:29,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:48:29,421 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:48:29,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:48:29,427 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 21:48:29,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:48:29 BoogieIcfgContainer [2022-01-31 21:48:29,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:48:29,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:48:29,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:48:29,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:48:29,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:48:28" (1/3) ... [2022-01-31 21:48:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd5c9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:48:29, skipping insertion in model container [2022-01-31 21:48:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:48:29" (2/3) ... [2022-01-31 21:48:29,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd5c9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:48:29, skipping insertion in model container [2022-01-31 21:48:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:48:29" (3/3) ... [2022-01-31 21:48:29,448 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2022-01-31 21:48:29,452 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:48:29,452 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:48:29,515 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:48:29,524 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:48:29,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:48:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-31 21:48:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 21:48:29,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:48:29,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:48:29,548 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:48:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:48:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -150104916, now seen corresponding path program 1 times [2022-01-31 21:48:29,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:48:29,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44860641] [2022-01-31 21:48:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:48:29,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:48:29,621 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:48:29,680 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 21:48:29,682 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 21:48:29,687 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:48:29,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:48:29,693 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-31 21:48:29,694 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:48:29,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:48:29 BoogieIcfgContainer [2022-01-31 21:48:29,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:48:29,707 INFO L158 Benchmark]: Toolchain (without parser) took 874.09ms. Allocated memory was 181.4MB in the beginning and 272.6MB in the end (delta: 91.2MB). Free memory was 127.0MB in the beginning and 219.5MB in the end (delta: -92.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:48:29,707 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:48:29,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.89ms. Allocated memory was 181.4MB in the beginning and 272.6MB in the end (delta: 91.2MB). Free memory was 126.8MB in the beginning and 246.3MB in the end (delta: -119.5MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-01-31 21:48:29,709 INFO L158 Benchmark]: Boogie Preprocessor took 44.35ms. Allocated memory is still 272.6MB. Free memory was 246.3MB in the beginning and 244.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 21:48:29,710 INFO L158 Benchmark]: RCFGBuilder took 311.09ms. Allocated memory is still 272.6MB. Free memory was 244.2MB in the beginning and 232.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 21:48:29,713 INFO L158 Benchmark]: TraceAbstraction took 276.30ms. Allocated memory is still 272.6MB. Free memory was 231.6MB in the beginning and 219.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-31 21:48:29,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 181.4MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.89ms. Allocated memory was 181.4MB in the beginning and 272.6MB in the end (delta: 91.2MB). Free memory was 126.8MB in the beginning and 246.3MB in the end (delta: -119.5MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.35ms. Allocated memory is still 272.6MB. Free memory was 246.3MB in the beginning and 244.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 311.09ms. Allocated memory is still 272.6MB. Free memory was 244.2MB in the beginning and 232.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 276.30ms. Allocated memory is still 272.6MB. Free memory was 231.6MB in the beginning and 219.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int A, R; [L21] long long u, v, r; [L22] A = __VERIFIER_nondet_int() [L23] R = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) [L9] COND TRUE !cond [L24] RET assume_abort_if_not((((long long) R - 1) * ((long long) R - 1)) < A) [L26] CALL assume_abort_if_not(A % 2 == 1) [L9] COND TRUE !cond [L26] RET assume_abort_if_not(A % 2 == 1) [L28] u = ((long long) 2 * R) + 1 [L29] v = 1 [L30] r = ((long long) R * R) - A [L55] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 21:48:29,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...