/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/float-benchs/filter2_alt.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-02-01 00:15:15,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-01 00:15:15,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-01 00:15:15,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-01 00:15:15,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-01 00:15:15,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-01 00:15:15,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-01 00:15:15,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-01 00:15:15,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-01 00:15:15,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-01 00:15:15,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-01 00:15:15,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-01 00:15:15,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-01 00:15:15,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-01 00:15:15,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-01 00:15:15,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-01 00:15:15,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-01 00:15:15,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-01 00:15:15,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-01 00:15:15,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-01 00:15:15,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-01 00:15:15,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-01 00:15:15,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-01 00:15:15,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-01 00:15:15,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-01 00:15:15,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-01 00:15:15,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-01 00:15:15,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-01 00:15:15,694 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-01 00:15:15,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-01 00:15:15,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:15,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-01 00:15:15,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-01 00:15:15,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-01 00:15:15,695 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-01 00:15:15,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-01 00:15:15,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-01 00:15:15,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-01 00:15:15,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-01 00:15:15,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-01 00:15:15,969 INFO L275 PluginConnector]: CDTParser initialized [2022-02-01 00:15:15,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter2_alt.c [2022-02-01 00:15:16,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e361691a/c2b4cb8289ae44798af356931e65c904/FLAG0afc969f5 [2022-02-01 00:15:16,441 INFO L306 CDTParser]: Found 1 translation units. [2022-02-01 00:15:16,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_alt.c [2022-02-01 00:15:16,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e361691a/c2b4cb8289ae44798af356931e65c904/FLAG0afc969f5 [2022-02-01 00:15:16,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e361691a/c2b4cb8289ae44798af356931e65c904 [2022-02-01 00:15:16,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-01 00:15:16,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-01 00:15:16,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:16,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-01 00:15:16,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-01 00:15:16,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:16" (1/1) ... [2022-02-01 00:15:16,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d41856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:16, skipping insertion in model container [2022-02-01 00:15:16,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.02 12:15:16" (1/1) ... [2022-02-01 00:15:16,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-01 00:15:16,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-01 00:15:17,061 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/filter2_alt.c[631,644] [2022-02-01 00:15:17,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:17,094 INFO L203 MainTranslator]: Completed pre-run [2022-02-01 00:15:17,106 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/filter2_alt.c[631,644] [2022-02-01 00:15:17,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-01 00:15:17,155 INFO L208 MainTranslator]: Completed translation [2022-02-01 00:15:17,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17 WrapperNode [2022-02-01 00:15:17,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-01 00:15:17,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-01 00:15:17,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-01 00:15:17,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-01 00:15:17,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-01 00:15:17,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-01 00:15:17,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-01 00:15:17,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-01 00:15:17,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (1/1) ... [2022-02-01 00:15:17,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-01 00:15:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-01 00:15:17,321 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) [2022-02-01 00:15:17,348 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 [2022-02-01 00:15:17,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-01 00:15:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-01 00:15:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-01 00:15:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-01 00:15:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-01 00:15:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2022-02-01 00:15:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure filter2 [2022-02-01 00:15:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-01 00:15:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure filter2 [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-01 00:15:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-01 00:15:17,443 INFO L234 CfgBuilder]: Building ICFG [2022-02-01 00:15:17,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-01 00:15:17,564 INFO L275 CfgBuilder]: Performing block encoding [2022-02-01 00:15:17,568 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-01 00:15:17,568 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-01 00:15:17,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:17 BoogieIcfgContainer [2022-02-01 00:15:17,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-01 00:15:17,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-01 00:15:17,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-01 00:15:17,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-01 00:15:17,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.02 12:15:16" (1/3) ... [2022-02-01 00:15:17,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454f38e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:17, skipping insertion in model container [2022-02-01 00:15:17,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.02 12:15:17" (2/3) ... [2022-02-01 00:15:17,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454f38e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.02 12:15:17, skipping insertion in model container [2022-02-01 00:15:17,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.02 12:15:17" (3/3) ... [2022-02-01 00:15:17,574 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_alt.c [2022-02-01 00:15:17,578 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-01 00:15:17,578 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-01 00:15:17,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-01 00:15:17,608 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=QVASR [2022-02-01 00:15:17,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-01 00:15:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-01 00:15:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-01 00:15:17,622 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:17,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:15:17,623 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1861901742, now seen corresponding path program 1 times [2022-02-01 00:15:17,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:17,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806931086] [2022-02-01 00:15:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:17,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:17,685 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-01 00:15:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-01 00:15:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-01 00:15:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-01 00:15:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-01 00:15:17,841 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:15:17,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806931086] [2022-02-01 00:15:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [806931086] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:15:17,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:15:17,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-01 00:15:17,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368743225] [2022-02-01 00:15:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:15:17,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-01 00:15:17,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:15:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-01 00:15:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:15:17,868 INFO L87 Difference]: Start difference. First operand has 37 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:15:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:15:17,945 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2022-02-01 00:15:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-01 00:15:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-02-01 00:15:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:15:17,952 INFO L225 Difference]: With dead ends: 63 [2022-02-01 00:15:17,952 INFO L226 Difference]: Without dead ends: 32 [2022-02-01 00:15:17,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-01 00:15:17,961 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-01 00:15:17,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-01 00:15:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-01 00:15:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-01 00:15:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-01 00:15:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-02-01 00:15:18,004 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 34 [2022-02-01 00:15:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:15:18,005 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-02-01 00:15:18,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:15:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-02-01 00:15:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-01 00:15:18,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:18,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:15:18,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-01 00:15:18,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1415644338, now seen corresponding path program 1 times [2022-02-01 00:15:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:18,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264789063] [2022-02-01 00:15:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:18,019 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-01 00:15:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-02-01 00:15:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-01 00:15:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-01 00:15:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-02-01 00:15:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-01 00:15:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-01 00:15:18,145 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-01 00:15:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264789063] [2022-02-01 00:15:18,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [264789063] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-01 00:15:18,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-01 00:15:18,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-01 00:15:18,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352607940] [2022-02-01 00:15:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-01 00:15:18,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-01 00:15:18,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-01 00:15:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-01 00:15:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-01 00:15:18,147 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:15:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-01 00:15:18,234 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2022-02-01 00:15:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-01 00:15:18,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-02-01 00:15:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-01 00:15:18,235 INFO L225 Difference]: With dead ends: 75 [2022-02-01 00:15:18,235 INFO L226 Difference]: Without dead ends: 50 [2022-02-01 00:15:18,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-01 00:15:18,237 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-01 00:15:18,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-01 00:15:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-01 00:15:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-02-01 00:15:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-01 00:15:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-02-01 00:15:18,248 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 34 [2022-02-01 00:15:18,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-01 00:15:18,248 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-02-01 00:15:18,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-01 00:15:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-02-01 00:15:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-02-01 00:15:18,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-01 00:15:18,249 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-01 00:15:18,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-01 00:15:18,250 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-01 00:15:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-01 00:15:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -84786160, now seen corresponding path program 1 times [2022-02-01 00:15:18,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-01 00:15:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975859777] [2022-02-01 00:15:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-01 00:15:18,274 INFO L92 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Could not compute Simultaneous Update! [2022-02-01 00:15:18,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-01 00:15:18,277 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-01 00:15:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:15:18,338 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-01 00:15:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-01 00:15:18,414 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-01 00:15:18,415 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-01 00:15:18,419 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-01 00:15:18,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-01 00:15:18,423 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-01 00:15:18,425 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-01 00:15:18,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.02 12:15:18 BoogieIcfgContainer [2022-02-01 00:15:18,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-01 00:15:18,440 INFO L158 Benchmark]: Toolchain (without parser) took 1595.98ms. Allocated memory was 183.5MB in the beginning and 220.2MB in the end (delta: 36.7MB). Free memory was 131.0MB in the beginning and 186.1MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:15:18,440 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:15:18,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.14ms. Allocated memory is still 183.5MB. Free memory was 130.8MB in the beginning and 155.6MB in the end (delta: -24.7MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-02-01 00:15:18,441 INFO L158 Benchmark]: Boogie Preprocessor took 86.08ms. Allocated memory is still 183.5MB. Free memory was 155.6MB in the beginning and 154.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-01 00:15:18,442 INFO L158 Benchmark]: RCFGBuilder took 326.34ms. Allocated memory is still 183.5MB. Free memory was 154.0MB in the beginning and 141.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-01 00:15:18,442 INFO L158 Benchmark]: TraceAbstraction took 869.22ms. Allocated memory was 183.5MB in the beginning and 220.2MB in the end (delta: 36.7MB). Free memory was 141.9MB in the beginning and 186.1MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-01 00:15:18,444 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 183.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.14ms. Allocated memory is still 183.5MB. Free memory was 130.8MB in the beginning and 155.6MB in the end (delta: -24.7MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 86.08ms. Allocated memory is still 183.5MB. Free memory was 155.6MB in the beginning and 154.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 326.34ms. Allocated memory is still 183.5MB. Free memory was 154.0MB in the beginning and 141.9MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 869.22ms. Allocated memory was 183.5MB in the beginning and 220.2MB in the end (delta: 36.7MB). Free memory was 141.9MB in the beginning and 186.1MB in the end (delta: -44.1MB). There was no memory consumed. 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 43, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L19] BOOLEAN INIT; [L20] float P, X; [L32] static float E[2], S[2]; [L52] CALL, EXPR RANDOM_INPUT() [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; [L52] RET, EXPR RANDOM_INPUT() [L52] X = RANDOM_INPUT() [L53] INIT = TRUE [L54] COND TRUE \read(TRUE) [L55] CALL, EXPR RANDOM_INPUT() [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; [L55] RET, EXPR RANDOM_INPUT() [L55] X = RANDOM_INPUT() [L56] CALL filter2 () [L33] COND TRUE \read(INIT) [L34] S[0] = X [L35] P = X [L36] E[0] = X [L46] EXPR E[0] [L46] E[1] = E[0] [L46] E[0] = X [L47] EXPR S[0] [L47] S[1] = S[0] [L47] S[0] = P [L56] RET filter2 () [L57] INIT = FALSE [L54] COND TRUE \read(TRUE) [L55] CALL, EXPR RANDOM_INPUT() [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -10.f && x <= 10.f) [L12] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x >= -10.f && x <= 10.f) [L27] return x; [L55] RET, EXPR RANDOM_INPUT() [L55] X = RANDOM_INPUT() [L56] CALL filter2 () [L33] COND FALSE !(\read(INIT)) [L39] EXPR E[0] [L40] EXPR E[1] [L41] EXPR S[0] [L42] EXPR S[1] [L38-L42] P = (((((0.4677826f * X) - (E[0] * 0.7700725f)) + (E[1] * 0.4344376f)) + (S[0] * 1.5419f)) - (S[1] * 0.6740477f)) [L43] CALL __VERIFIER_assert(P >= -15.f && P <= 15.f) [L14] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 68 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=2, InterpolantAutomatonStates: 8, 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, 1 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 [2022-02-01 00:15:18,473 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...