/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/float-benchs/divmul_diverge.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:52:55,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:52:55,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:52:55,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 22:52:55,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:52:55,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:52:55,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:52:55,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:52:55,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:52:55,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:52:55,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:52:55,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:52:55,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:52:55,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:52:55,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:52:55,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:52:55,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 22:52:55,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:52:55,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:52:55,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:52:55,124 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 22:52:55,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:52:55,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:52:55,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:52:55,137 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:52:55,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:52:55,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:52:55,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:52:55,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:52:55,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:52:55,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:52:55,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:52:55,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:52:55,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:52:55,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:55,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:52:55,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:52:55,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:52:55,140 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:52:55,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:52:55,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:52:55,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:52:55,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:52:55,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:52:55,375 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:52:55,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/divmul_diverge.c [2022-01-31 22:52:55,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87968023a/940e2224ea464c7a9035016218c2d72c/FLAGc644f38a2 [2022-01-31 22:52:55,762 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:52:55,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/divmul_diverge.c [2022-01-31 22:52:55,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87968023a/940e2224ea464c7a9035016218c2d72c/FLAGc644f38a2 [2022-01-31 22:52:55,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87968023a/940e2224ea464c7a9035016218c2d72c [2022-01-31 22:52:55,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:52:55,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:52:55,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:55,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:52:55,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:52:55,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226d4b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55, skipping insertion in model container [2022-01-31 22:52:55,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:52:55,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:52:55,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/divmul_diverge.c[613,626] [2022-01-31 22:52:55,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:55,923 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:52:55,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/divmul_diverge.c[613,626] [2022-01-31 22:52:55,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:55,950 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:52:55,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55 WrapperNode [2022-01-31 22:52:55,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:55,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:52:55,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:52:55,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:52:55,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:52:55,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:52:55,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:52:55,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:52:55,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (1/1) ... [2022-01-31 22:52:55,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:56,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:52:56,013 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 22:52:56,030 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 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_clock [2022-01-31 22:52:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 22:52:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-01-31 22:52:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 22:52:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 22:52:56,044 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_clock [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:52:56,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:52:56,090 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:52:56,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:52:56,209 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:52:56,229 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:52:56,230 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 22:52:56,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:56 BoogieIcfgContainer [2022-01-31 22:52:56,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:52:56,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:52:56,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:52:56,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:52:56,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:52:55" (1/3) ... [2022-01-31 22:52:56,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f06247c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:56, skipping insertion in model container [2022-01-31 22:52:56,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:55" (2/3) ... [2022-01-31 22:52:56,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f06247c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:56, skipping insertion in model container [2022-01-31 22:52:56,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:56" (3/3) ... [2022-01-31 22:52:56,236 INFO L111 eAbstractionObserver]: Analyzing ICFG divmul_diverge.c [2022-01-31 22:52:56,239 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:52:56,240 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 22:52:56,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:52:56,300 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 22:52:56,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 22:52:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 22:52:56,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 22:52:56,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:56,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:56,333 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:56,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1317922396, now seen corresponding path program 1 times [2022-01-31 22:52:56,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:56,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179571043] [2022-01-31 22:52:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:56,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:56,389 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:56,498 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:56,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179571043] [2022-01-31 22:52:56,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179571043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:56,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:56,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 22:52:56,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663923726] [2022-01-31 22:52:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:56,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 22:52:56,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 22:52:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 22:52:56,529 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:56,585 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2022-01-31 22:52:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 22:52:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 22:52:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:56,592 INFO L225 Difference]: With dead ends: 54 [2022-01-31 22:52:56,592 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 22:52:56,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 22:52:56,599 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:56,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 22:52:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-31 22:52:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 22:52:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-01-31 22:52:56,632 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-01-31 22:52:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:56,632 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-01-31 22:52:56,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-01-31 22:52:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 22:52:56,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:56,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:56,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:52:56,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1331775211, now seen corresponding path program 1 times [2022-01-31 22:52:56,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:56,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471390346] [2022-01-31 22:52:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:56,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:56,639 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 22:52:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 22:52:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 22:52:56,708 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 22:52:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471390346] [2022-01-31 22:52:56,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [471390346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 22:52:56,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 22:52:56,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 22:52:56,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244745725] [2022-01-31 22:52:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 22:52:56,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 22:52:56,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 22:52:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 22:52:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 22:52:56,710 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 22:52:56,776 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-31 22:52:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 22:52:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-31 22:52:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 22:52:56,779 INFO L225 Difference]: With dead ends: 34 [2022-01-31 22:52:56,779 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 22:52:56,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 22:52:56,784 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 22:52:56,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 22:52:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 22:52:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-01-31 22:52:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 22:52:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-01-31 22:52:56,800 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2022-01-31 22:52:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 22:52:56,800 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-01-31 22:52:56,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 22:52:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-01-31 22:52:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-31 22:52:56,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:56,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:56,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 22:52:56,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1313403187, now seen corresponding path program 1 times [2022-01-31 22:52:56,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:56,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534579399] [2022-01-31 22:52:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:56,950 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 22:52:56,951 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 22:52:56,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:52:56,976 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:52:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:52:57,013 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:52:57,013 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:52:57,016 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 22:52:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 22:52:57,020 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 22:52:57,022 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:52:57,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:52:57 BoogieIcfgContainer [2022-01-31 22:52:57,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:52:57,034 INFO L158 Benchmark]: Toolchain (without parser) took 1252.92ms. Allocated memory is still 208.7MB. Free memory was 160.7MB in the beginning and 133.1MB in the end (delta: 27.6MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2022-01-31 22:52:57,034 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 208.7MB. Free memory was 176.9MB in the beginning and 176.7MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:52:57,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.59ms. Allocated memory is still 208.7MB. Free memory was 160.5MB in the beginning and 186.6MB in the end (delta: -26.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 22:52:57,035 INFO L158 Benchmark]: Boogie Preprocessor took 37.80ms. Allocated memory is still 208.7MB. Free memory was 186.6MB in the beginning and 185.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 22:52:57,038 INFO L158 Benchmark]: RCFGBuilder took 241.26ms. Allocated memory is still 208.7MB. Free memory was 185.0MB in the beginning and 175.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 22:52:57,039 INFO L158 Benchmark]: TraceAbstraction took 801.48ms. Allocated memory is still 208.7MB. Free memory was 174.5MB in the beginning and 133.1MB in the end (delta: 41.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-01-31 22:52:57,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 208.7MB. Free memory was 176.9MB in the beginning and 176.7MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.59ms. Allocated memory is still 208.7MB. Free memory was 160.5MB in the beginning and 186.6MB in the end (delta: -26.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.80ms. Allocated memory is still 208.7MB. Free memory was 186.6MB in the beginning and 185.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 241.26ms. Allocated memory is still 208.7MB. Free memory was 185.0MB in the beginning and 175.0MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 801.48ms. Allocated memory is still 208.7MB. Free memory was 174.5MB in the beginning and 133.1MB in the end (delta: 41.4MB). Peak memory consumption was 40.9MB. 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: overapproximation of someBinaryFLOATComparisonOperation at line 38, overapproximation of to_real at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L20] int i; [L21] float x; [L23] x = 0 [L25] i = 0 [L25] COND TRUE i < 3000000 [L27] COND FALSE !(__VERIFIER_nondet_int()) [L32] x = x / 3.1f [L33] x = x * 3.1f [L35] FCALL wait_for_clock() [L25] i++ [L25] COND FALSE !(i < 3000000) [L38] CALL __VERIFIER_assert(x >= -1000.f && x <= 1000.f) [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 48 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 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 22:52:57,067 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...