/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-scaling/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:52:35,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:52:35,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:52:35,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:52:35,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 21:52:35,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 21:52:35,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 21:52:35,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 21:52:35,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 21:52:35,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 21:52:35,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 21:52:35,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 21:52:35,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 21:52:35,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 21:52:35,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 21:52:35,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 21:52:35,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 21:52:35,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:52:35,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:52:35,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:52:35,192 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 21:52:35,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:52:35,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:52:35,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:52:35,198 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:52:35,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:52:35,199 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:52:35,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:52:35,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:52:35,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:52:35,201 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:52:35,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:52:35,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:52:35,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:52:35,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:52:35,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:52:35,395 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:52:35,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-01-31 21:52:35,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510de1cbb/e5b192cbeee641748a9fb1e28d1065b0/FLAG567563246 [2022-01-31 21:52:35,821 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:52:35,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-01-31 21:52:35,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510de1cbb/e5b192cbeee641748a9fb1e28d1065b0/FLAG567563246 [2022-01-31 21:52:36,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/510de1cbb/e5b192cbeee641748a9fb1e28d1065b0 [2022-01-31 21:52:36,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:52:36,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:52:36,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:52:36,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:52:36,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:52:36,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3700e305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36, skipping insertion in model container [2022-01-31 21:52:36,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:52:36,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:52:36,387 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-scaling/egcd2-ll_valuebound2.c[490,503] [2022-01-31 21:52:36,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:52:36,433 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:52:36,447 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-scaling/egcd2-ll_valuebound2.c[490,503] [2022-01-31 21:52:36,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:52:36,469 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:52:36,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36 WrapperNode [2022-01-31 21:52:36,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:52:36,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:52:36,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:52:36,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:52:36,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:52:36,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:52:36,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:52:36,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:52:36,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (1/1) ... [2022-01-31 21:52:36,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:52:36,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:52:36,533 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 21:52:36,535 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 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:52:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:52:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:52:36,559 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:52:36,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:52:36,605 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:52:36,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:52:36,735 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:52:36,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:52:36,740 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 21:52:36,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:36 BoogieIcfgContainer [2022-01-31 21:52:36,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:52:36,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:52:36,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:52:36,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:52:36,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:52:36" (1/3) ... [2022-01-31 21:52:36,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53adc276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:52:36, skipping insertion in model container [2022-01-31 21:52:36,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:52:36" (2/3) ... [2022-01-31 21:52:36,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53adc276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:52:36, skipping insertion in model container [2022-01-31 21:52:36,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:52:36" (3/3) ... [2022-01-31 21:52:36,759 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-01-31 21:52:36,763 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:52:36,763 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:52:36,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:52:36,810 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 21:52:36,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:52:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-01-31 21:52:36,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-31 21:52:36,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:36,830 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:36,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2022-01-31 21:52:36,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:36,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606298801] [2022-01-31 21:52:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:36,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:36,889 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:52:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:52:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 21:52:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-31 21:52:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-31 21:52:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-31 21:52:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-01-31 21:52:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-31 21:52:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:52:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-31 21:52:37,086 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:52:37,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606298801] [2022-01-31 21:52:37,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [606298801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:52:37,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:52:37,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:52:37,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990044801] [2022-01-31 21:52:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:52:37,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:52:37,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:52:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:52:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:52:37,125 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-31 21:52:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:52:37,240 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-01-31 21:52:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:52:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-01-31 21:52:37,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:52:37,248 INFO L225 Difference]: With dead ends: 73 [2022-01-31 21:52:37,248 INFO L226 Difference]: Without dead ends: 35 [2022-01-31 21:52:37,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:52:37,256 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 21:52:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 21:52:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-31 21:52:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-01-31 21:52:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-01-31 21:52:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-01-31 21:52:37,309 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-01-31 21:52:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:52:37,309 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-01-31 21:52:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-31 21:52:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-01-31 21:52:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 21:52:37,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:52:37,311 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:52:37,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:52:37,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:52:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:52:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2022-01-31 21:52:37,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:52:37,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619445924] [2022-01-31 21:52:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:52:37,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:52:37,321 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:52:37,341 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 21:52:37,341 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 21:52:37,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:52:37,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:52:37,349 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 21:52:37,351 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:52:37,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:52:37 BoogieIcfgContainer [2022-01-31 21:52:37,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:52:37,363 INFO L158 Benchmark]: Toolchain (without parser) took 1113.04ms. Allocated memory was 190.8MB in the beginning and 298.8MB in the end (delta: 108.0MB). Free memory was 138.2MB in the beginning and 224.9MB in the end (delta: -86.8MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. [2022-01-31 21:52:37,363 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:52:37,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.33ms. Allocated memory was 190.8MB in the beginning and 298.8MB in the end (delta: 108.0MB). Free memory was 138.0MB in the beginning and 271.3MB in the end (delta: -133.4MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-01-31 21:52:37,368 INFO L158 Benchmark]: Boogie Preprocessor took 33.16ms. Allocated memory is still 298.8MB. Free memory was 271.3MB in the beginning and 269.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 21:52:37,368 INFO L158 Benchmark]: RCFGBuilder took 236.57ms. Allocated memory is still 298.8MB. Free memory was 269.5MB in the beginning and 256.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 21:52:37,369 INFO L158 Benchmark]: TraceAbstraction took 619.56ms. Allocated memory is still 298.8MB. Free memory was 256.4MB in the beginning and 224.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-01-31 21:52:37,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 154.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.33ms. Allocated memory was 190.8MB in the beginning and 298.8MB in the end (delta: 108.0MB). Free memory was 138.0MB in the beginning and 271.3MB in the end (delta: -133.4MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.16ms. Allocated memory is still 298.8MB. Free memory was 271.3MB in the beginning and 269.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 236.57ms. Allocated memory is still 298.8MB. Free memory was 269.5MB in the beginning and 256.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 619.56ms. Allocated memory is still 298.8MB. Free memory was 256.4MB in the beginning and 224.9MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. 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: 13]: 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: [L19] int x, y; [L20] long long a, b, p, q, r, s, c, k, xy, yy; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=2) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=2) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=2) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=2) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L34] c = 0 [L35] k = 0 [L36] xy = (long long) x * y [L37] yy = (long long) y * y [L38] CALL assume_abort_if_not(xy < 2147483647) [L8] COND FALSE !(!cond) [L38] RET assume_abort_if_not(xy < 2147483647) [L39] CALL assume_abort_if_not(yy < 2147483647) [L8] COND FALSE !(!cond) [L39] RET assume_abort_if_not(yy < 2147483647) [L41] COND TRUE 1 [L42] COND TRUE !(b != 0) [L71] CALL __VERIFIER_assert(q*x + s*y == 0) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 39 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, 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 21:52:37,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...