/usr/bin/java -ea -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/loop-acceleration/simple_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 09:26:08,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 09:26:08,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 09:26:08,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 09:26:08,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 09:26:08,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 09:26:08,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 09:26:08,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 09:26:08,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 09:26:08,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 09:26:08,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 09:26:08,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 09:26:08,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 09:26:08,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 09:26:08,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 09:26:08,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 09:26:08,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 09:26:08,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 09:26:08,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 09:26:08,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 09:26:08,607 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 09:26:08,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 09:26:08,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 09:26:08,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 09:26:08,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 09:26:08,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-28 09:26:08,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-28 09:26:08,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-28 09:26:08,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-28 09:26:08,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-28 09:26:08,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-28 09:26:08,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-28 09:26:08,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-28 09:26:08,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-28 09:26:08,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-28 09:26:08,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-28 09:26:08,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-28 09:26:08,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-28 09:26:08,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-28 09:26:08,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 09:26:08,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 09:26:08,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 09:26:08,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 09:26:08,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 09:26:08,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 09:26:08,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 09:26:08,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 09:26:08,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 09:26:08,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 09:26:08,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 09:26:08,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 09:26:08,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 09:26:08,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:26:08,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 09:26:08,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 09:26:08,645 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 09:26:08,645 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 09:26:08,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 09:26:08,645 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 09:26:08,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 09:26:08,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 09:26:08,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 09:26:08,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 09:26:08,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 09:26:08,908 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 09:26:08,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2022-04-28 09:26:08,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e21e7bc/a0f376a19439475cb7fdda078a99d682/FLAGb87aadb4a [2022-04-28 09:26:09,367 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 09:26:09,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2022-04-28 09:26:09,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e21e7bc/a0f376a19439475cb7fdda078a99d682/FLAGb87aadb4a [2022-04-28 09:26:09,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4e21e7bc/a0f376a19439475cb7fdda078a99d682 [2022-04-28 09:26:09,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 09:26:09,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 09:26:09,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 09:26:09,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 09:26:09,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 09:26:09,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:09,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239d6d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09, skipping insertion in model container [2022-04-28 09:26:09,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:09,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 09:26:09,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 09:26:09,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c[376,389] [2022-04-28 09:26:09,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:26:09,967 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 09:26:09,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c[376,389] [2022-04-28 09:26:09,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 09:26:09,989 INFO L208 MainTranslator]: Completed translation [2022-04-28 09:26:09,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09 WrapperNode [2022-04-28 09:26:09,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 09:26:09,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 09:26:09,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 09:26:09,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 09:26:09,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:09,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 09:26:10,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 09:26:10,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 09:26:10,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 09:26:10,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (1/1) ... [2022-04-28 09:26:10,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 09:26:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 09:26:10,040 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) [2022-04-28 09:26:10,047 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 [2022-04-28 09:26:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 09:26:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 09:26:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 09:26:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 09:26:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 09:26:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 09:26:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 09:26:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 09:26:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 09:26:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 09:26:10,127 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 09:26:10,128 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 09:26:10,265 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 09:26:10,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 09:26:10,272 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 09:26:10,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:26:10 BoogieIcfgContainer [2022-04-28 09:26:10,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 09:26:10,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 09:26:10,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 09:26:10,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 09:26:10,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 09:26:09" (1/3) ... [2022-04-28 09:26:10,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19295f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:26:10, skipping insertion in model container [2022-04-28 09:26:10,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 09:26:09" (2/3) ... [2022-04-28 09:26:10,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19295f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:26:10, skipping insertion in model container [2022-04-28 09:26:10,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:26:10" (3/3) ... [2022-04-28 09:26:10,280 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-1.c [2022-04-28 09:26:10,291 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 09:26:10,291 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 09:26:10,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 09:26:10,331 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c93cc04, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67f2f17f [2022-04-28 09:26:10,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 09:26:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 09:26:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 09:26:10,343 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 09:26:10,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 09:26:10,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 09:26:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 09:26:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2022-04-28 09:26:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 09:26:10,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [700566217] [2022-04-28 09:26:10,363 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 09:26:10,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 2 times [2022-04-28 09:26:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 09:26:10,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990403291] [2022-04-28 09:26:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 09:26:10,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 09:26:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:26:10,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 09:26:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 09:26:10,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 09:26:10,552 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 09:26:10,552 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 09:26:10,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 09:26:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 09:26:10,565 INFO L356 BasicCegarLoop]: Path program histogram: [2] [2022-04-28 09:26:10,570 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 09:26:10,583 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 09:26:10,583 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 09:26:10,583 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:26:10,583 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 09:26:10,583 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 09:26:10,584 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 09:26:10,584 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 09:26:10,584 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 09:26:10,584 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:26:10,585 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 09:26:10,585 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:26:10,585 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:26:10,585 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2022-04-28 09:26:10,585 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2022-04-28 09:26:10,586 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2022-04-28 09:26:10,587 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2022-04-28 09:26:10,588 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-28 09:26:10,588 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 09:26:10,588 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 09:26:10,588 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 09:26:10,588 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 09:26:10,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:26:10 BoogieIcfgContainer [2022-04-28 09:26:10,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 09:26:10,592 INFO L158 Benchmark]: Toolchain (without parser) took 808.79ms. Allocated memory is still 203.4MB. Free memory was 157.3MB in the beginning and 156.9MB in the end (delta: 445.2kB). Peak memory consumption was 500.0kB. Max. memory is 8.0GB. [2022-04-28 09:26:10,593 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 203.4MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 09:26:10,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.08ms. Allocated memory is still 203.4MB. Free memory was 157.0MB in the beginning and 184.4MB in the end (delta: -27.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 09:26:10,594 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 203.4MB. Free memory was 184.4MB in the beginning and 182.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 09:26:10,595 INFO L158 Benchmark]: RCFGBuilder took 260.63ms. Allocated memory is still 203.4MB. Free memory was 182.7MB in the beginning and 173.0MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-28 09:26:10,599 INFO L158 Benchmark]: TraceAbstraction took 315.58ms. Allocated memory is still 203.4MB. Free memory was 172.6MB in the beginning and 156.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-04-28 09:26:10,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 203.4MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.08ms. Allocated memory is still 203.4MB. Free memory was 157.0MB in the beginning and 184.4MB in the end (delta: -27.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 203.4MB. Free memory was 184.4MB in the beginning and 182.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 260.63ms. Allocated memory is still 203.4MB. Free memory was 182.7MB in the beginning and 173.0MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 315.58ms. Allocated memory is still 203.4MB. Free memory was 172.6MB in the beginning and 156.9MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned short N = __VERIFIER_nondet_ushort(); [L17] COND FALSE !(x < N) [L21] CALL __VERIFIER_assert(x % 2) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-28 09:26:10,643 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...