/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 14:30:13,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 14:30:13,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 14:30:13,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 14:30:13,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 14:30:13,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 14:30:13,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 14:30:13,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 14:30:13,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 14:30:13,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 14:30:13,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 14:30:13,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 14:30:13,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 14:30:13,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 14:30:13,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 14:30:13,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 14:30:13,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 14:30:13,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 14:30:13,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 14:30:13,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 14:30:13,268 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 14:30:13,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 14:30:13,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 14:30:13,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 14:30:13,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 14:30:13,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 14:30:13,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 14:30:13,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 14:30:13,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 14:30:13,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-27 14:30:13,318 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 14:30:13,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 14:30:13,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 14:30:13,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 14:30:13,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 14:30:13,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 14:30:13,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 14:30:13,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 14:30:13,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 14:30:13,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 14:30:13,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:30:13,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 14:30:13,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 14:30:13,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 14:30:13,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 14:30:13,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 14:30:13,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 14:30:13,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 14:30:13,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 14:30:13,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 14:30:13,529 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 14:30:13,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound1.c [2022-04-27 14:30:13,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3afe374ad/0df1e777bf4c4e68bf0c71dc89b2dbdb/FLAGcac52b9ec [2022-04-27 14:30:13,902 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 14:30:13,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound1.c [2022-04-27 14:30:13,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3afe374ad/0df1e777bf4c4e68bf0c71dc89b2dbdb/FLAGcac52b9ec [2022-04-27 14:30:14,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3afe374ad/0df1e777bf4c4e68bf0c71dc89b2dbdb [2022-04-27 14:30:14,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 14:30:14,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 14:30:14,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 14:30:14,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 14:30:14,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 14:30:14,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f1e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14, skipping insertion in model container [2022-04-27 14:30:14,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 14:30:14,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 14:30:14,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound1.c[454,467] [2022-04-27 14:30:14,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:30:14,512 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 14:30:14,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound1.c[454,467] [2022-04-27 14:30:14,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:30:14,537 INFO L208 MainTranslator]: Completed translation [2022-04-27 14:30:14,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14 WrapperNode [2022-04-27 14:30:14,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 14:30:14,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 14:30:14,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 14:30:14,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 14:30:14,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 14:30:14,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 14:30:14,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 14:30:14,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 14:30:14,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (1/1) ... [2022-04-27 14:30:14,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:30:14,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:30:14,603 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) [2022-04-27 14:30:14,621 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 [2022-04-27 14:30:14,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 14:30:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 14:30:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 14:30:14,645 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 14:30:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 14:30:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 14:30:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 14:30:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 14:30:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 14:30:14,704 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 14:30:14,705 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 14:30:14,802 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 14:30:14,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 14:30:14,808 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 14:30:14,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:30:14 BoogieIcfgContainer [2022-04-27 14:30:14,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 14:30:14,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 14:30:14,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 14:30:14,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 14:30:14,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 02:30:14" (1/3) ... [2022-04-27 14:30:14,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410962b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:30:14, skipping insertion in model container [2022-04-27 14:30:14,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:30:14" (2/3) ... [2022-04-27 14:30:14,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410962b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:30:14, skipping insertion in model container [2022-04-27 14:30:14,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:30:14" (3/3) ... [2022-04-27 14:30:14,816 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound1.c [2022-04-27 14:30:14,827 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 14:30:14,827 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 14:30:14,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 14:30:14,886 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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@1dd63d49, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6462bf14 [2022-04-27 14:30:14,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 14:30:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 14:30:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-27 14:30:14,902 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:30:14,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:30:14,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:30:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:30:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1914087080, now seen corresponding path program 1 times [2022-04-27 14:30:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:30:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094451021] [2022-04-27 14:30:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:30:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:30:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 14:30:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:15,130 INFO L290 TraceCheckUtils]: 0: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {30#true} is VALID [2022-04-27 14:30:15,130 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} assume true; {30#true} is VALID [2022-04-27 14:30:15,130 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {30#true} {30#true} #57#return; {30#true} is VALID [2022-04-27 14:30:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-27 14:30:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:15,150 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#true} ~cond := #in~cond; {30#true} is VALID [2022-04-27 14:30:15,152 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} assume 0 == ~cond;assume false; {31#false} is VALID [2022-04-27 14:30:15,152 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#false} assume true; {31#false} is VALID [2022-04-27 14:30:15,152 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#false} {30#true} #51#return; {31#false} is VALID [2022-04-27 14:30:15,154 INFO L272 TraceCheckUtils]: 0: Hoare triple {30#true} call ULTIMATE.init(); {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 14:30:15,154 INFO L290 TraceCheckUtils]: 1: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {30#true} is VALID [2022-04-27 14:30:15,154 INFO L290 TraceCheckUtils]: 2: Hoare triple {30#true} assume true; {30#true} is VALID [2022-04-27 14:30:15,155 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {30#true} {30#true} #57#return; {30#true} is VALID [2022-04-27 14:30:15,155 INFO L272 TraceCheckUtils]: 4: Hoare triple {30#true} call #t~ret5 := main(); {30#true} is VALID [2022-04-27 14:30:15,155 INFO L290 TraceCheckUtils]: 5: Hoare triple {30#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {30#true} is VALID [2022-04-27 14:30:15,155 INFO L272 TraceCheckUtils]: 6: Hoare triple {30#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {30#true} is VALID [2022-04-27 14:30:15,155 INFO L290 TraceCheckUtils]: 7: Hoare triple {30#true} ~cond := #in~cond; {30#true} is VALID [2022-04-27 14:30:15,156 INFO L290 TraceCheckUtils]: 8: Hoare triple {30#true} assume 0 == ~cond;assume false; {31#false} is VALID [2022-04-27 14:30:15,156 INFO L290 TraceCheckUtils]: 9: Hoare triple {31#false} assume true; {31#false} is VALID [2022-04-27 14:30:15,157 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {31#false} {30#true} #51#return; {31#false} is VALID [2022-04-27 14:30:15,157 INFO L290 TraceCheckUtils]: 11: Hoare triple {31#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {31#false} is VALID [2022-04-27 14:30:15,157 INFO L290 TraceCheckUtils]: 12: Hoare triple {31#false} assume false; {31#false} is VALID [2022-04-27 14:30:15,157 INFO L272 TraceCheckUtils]: 13: Hoare triple {31#false} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {31#false} is VALID [2022-04-27 14:30:15,157 INFO L290 TraceCheckUtils]: 14: Hoare triple {31#false} ~cond := #in~cond; {31#false} is VALID [2022-04-27 14:30:15,158 INFO L290 TraceCheckUtils]: 15: Hoare triple {31#false} assume 0 == ~cond; {31#false} is VALID [2022-04-27 14:30:15,158 INFO L290 TraceCheckUtils]: 16: Hoare triple {31#false} assume !false; {31#false} is VALID [2022-04-27 14:30:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:30:15,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:30:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094451021] [2022-04-27 14:30:15,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094451021] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:30:15,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:30:15,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 14:30:15,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117162805] [2022-04-27 14:30:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:30:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-27 14:30:15,170 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:30:15,173 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,208 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:15,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 14:30:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:30:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 14:30:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 14:30:15,235 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:15,347 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-04-27 14:30:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 14:30:15,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-27 14:30:15,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:30:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-04-27 14:30:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-04-27 14:30:15,370 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 56 transitions. [2022-04-27 14:30:15,455 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:15,462 INFO L225 Difference]: With dead ends: 45 [2022-04-27 14:30:15,462 INFO L226 Difference]: Without dead ends: 22 [2022-04-27 14:30:15,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 14:30:15,470 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 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 [2022-04-27 14:30:15,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:30:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-27 14:30:15,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-04-27 14:30:15,507 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:30:15,507 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 14:30:15,509 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 14:30:15,510 INFO L87 Difference]: Start difference. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 14:30:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:15,522 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-27 14:30:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 14:30:15,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:15,525 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:15,526 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 22 states. [2022-04-27 14:30:15,526 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 22 states. [2022-04-27 14:30:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:15,528 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-27 14:30:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 14:30:15,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:15,529 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:15,529 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:30:15,529 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:30:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 14:30:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-04-27 14:30:15,532 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-04-27 14:30:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:30:15,533 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-04-27 14:30:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 14:30:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-27 14:30:15,537 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:30:15,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:30:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 14:30:15,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:30:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:30:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1699034386, now seen corresponding path program 1 times [2022-04-27 14:30:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:30:15,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624161487] [2022-04-27 14:30:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:30:15,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:30:15,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:30:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960414606] [2022-04-27 14:30:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:30:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:30:15,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:30:15,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 14:30:15,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 14:30:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:15,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 14:30:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:15,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:30:15,794 INFO L272 TraceCheckUtils]: 0: Hoare triple {177#true} call ULTIMATE.init(); {177#true} is VALID [2022-04-27 14:30:15,795 INFO L290 TraceCheckUtils]: 1: Hoare triple {177#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {177#true} is VALID [2022-04-27 14:30:15,795 INFO L290 TraceCheckUtils]: 2: Hoare triple {177#true} assume true; {177#true} is VALID [2022-04-27 14:30:15,795 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {177#true} {177#true} #57#return; {177#true} is VALID [2022-04-27 14:30:15,796 INFO L272 TraceCheckUtils]: 4: Hoare triple {177#true} call #t~ret5 := main(); {177#true} is VALID [2022-04-27 14:30:15,796 INFO L290 TraceCheckUtils]: 5: Hoare triple {177#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {177#true} is VALID [2022-04-27 14:30:15,796 INFO L272 TraceCheckUtils]: 6: Hoare triple {177#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {177#true} is VALID [2022-04-27 14:30:15,797 INFO L290 TraceCheckUtils]: 7: Hoare triple {177#true} ~cond := #in~cond; {177#true} is VALID [2022-04-27 14:30:15,797 INFO L290 TraceCheckUtils]: 8: Hoare triple {177#true} assume !(0 == ~cond); {177#true} is VALID [2022-04-27 14:30:15,797 INFO L290 TraceCheckUtils]: 9: Hoare triple {177#true} assume true; {177#true} is VALID [2022-04-27 14:30:15,797 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {177#true} {177#true} #51#return; {177#true} is VALID [2022-04-27 14:30:15,798 INFO L290 TraceCheckUtils]: 11: Hoare triple {177#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {215#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:30:15,798 INFO L290 TraceCheckUtils]: 12: Hoare triple {215#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {215#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:30:15,799 INFO L272 TraceCheckUtils]: 13: Hoare triple {215#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {222#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:30:15,800 INFO L290 TraceCheckUtils]: 14: Hoare triple {222#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {226#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:30:15,800 INFO L290 TraceCheckUtils]: 15: Hoare triple {226#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {178#false} is VALID [2022-04-27 14:30:15,800 INFO L290 TraceCheckUtils]: 16: Hoare triple {178#false} assume !false; {178#false} is VALID [2022-04-27 14:30:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:30:15,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 14:30:15,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:30:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624161487] [2022-04-27 14:30:15,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:30:15,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960414606] [2022-04-27 14:30:15,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960414606] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:30:15,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:30:15,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 14:30:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733052886] [2022-04-27 14:30:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:30:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-27 14:30:15,808 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:30:15,808 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,824 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:15,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:30:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:30:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:30:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 14:30:15,826 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:15,929 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-04-27 14:30:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:30:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-27 14:30:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:30:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-04-27 14:30:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-04-27 14:30:15,934 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 34 transitions. [2022-04-27 14:30:15,964 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:15,966 INFO L225 Difference]: With dead ends: 32 [2022-04-27 14:30:16,008 INFO L226 Difference]: Without dead ends: 29 [2022-04-27 14:30:16,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-27 14:30:16,011 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:30:16,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 72 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:30:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-27 14:30:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-27 14:30:16,029 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:30:16,029 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 14:30:16,030 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 14:30:16,030 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 14:30:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:16,032 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-27 14:30:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-27 14:30:16,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:16,033 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:16,033 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-27 14:30:16,033 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-27 14:30:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:16,035 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-27 14:30:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-27 14:30:16,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:16,036 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:16,036 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:30:16,036 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:30:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 14:30:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-04-27 14:30:16,038 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2022-04-27 14:30:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:30:16,039 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-04-27 14:30:16,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-27 14:30:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-27 14:30:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-27 14:30:16,040 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:30:16,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:30:16,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 14:30:16,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:30:16,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:30:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:30:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash 276758134, now seen corresponding path program 1 times [2022-04-27 14:30:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:30:16,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137176975] [2022-04-27 14:30:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:30:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:30:16,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:30:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275076005] [2022-04-27 14:30:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:30:16,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:30:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:30:16,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-27 14:30:16,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 14:30:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:16,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-27 14:30:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:30:16,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:30:16,552 INFO L272 TraceCheckUtils]: 0: Hoare triple {380#true} call ULTIMATE.init(); {380#true} is VALID [2022-04-27 14:30:16,552 INFO L290 TraceCheckUtils]: 1: Hoare triple {380#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {380#true} is VALID [2022-04-27 14:30:16,552 INFO L290 TraceCheckUtils]: 2: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,552 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {380#true} {380#true} #57#return; {380#true} is VALID [2022-04-27 14:30:16,553 INFO L272 TraceCheckUtils]: 4: Hoare triple {380#true} call #t~ret5 := main(); {380#true} is VALID [2022-04-27 14:30:16,553 INFO L290 TraceCheckUtils]: 5: Hoare triple {380#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {380#true} is VALID [2022-04-27 14:30:16,553 INFO L272 TraceCheckUtils]: 6: Hoare triple {380#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {380#true} is VALID [2022-04-27 14:30:16,553 INFO L290 TraceCheckUtils]: 7: Hoare triple {380#true} ~cond := #in~cond; {380#true} is VALID [2022-04-27 14:30:16,557 INFO L290 TraceCheckUtils]: 8: Hoare triple {380#true} assume !(0 == ~cond); {380#true} is VALID [2022-04-27 14:30:16,557 INFO L290 TraceCheckUtils]: 9: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,558 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {380#true} {380#true} #51#return; {380#true} is VALID [2022-04-27 14:30:16,558 INFO L290 TraceCheckUtils]: 11: Hoare triple {380#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {418#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:30:16,559 INFO L290 TraceCheckUtils]: 12: Hoare triple {418#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {418#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:30:16,559 INFO L272 TraceCheckUtils]: 13: Hoare triple {418#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {380#true} is VALID [2022-04-27 14:30:16,559 INFO L290 TraceCheckUtils]: 14: Hoare triple {380#true} ~cond := #in~cond; {380#true} is VALID [2022-04-27 14:30:16,559 INFO L290 TraceCheckUtils]: 15: Hoare triple {380#true} assume !(0 == ~cond); {380#true} is VALID [2022-04-27 14:30:16,560 INFO L290 TraceCheckUtils]: 16: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,562 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {380#true} {418#(and (= main_~x~0 0) (= main_~y~0 0))} #53#return; {418#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:30:16,563 INFO L290 TraceCheckUtils]: 18: Hoare triple {418#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 + ~x~0; {440#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-27 14:30:16,564 INFO L290 TraceCheckUtils]: 19: Hoare triple {440#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} assume !false; {440#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-27 14:30:16,565 INFO L272 TraceCheckUtils]: 20: Hoare triple {440#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {447#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:30:16,565 INFO L290 TraceCheckUtils]: 21: Hoare triple {447#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {451#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:30:16,566 INFO L290 TraceCheckUtils]: 22: Hoare triple {451#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {381#false} is VALID [2022-04-27 14:30:16,566 INFO L290 TraceCheckUtils]: 23: Hoare triple {381#false} assume !false; {381#false} is VALID [2022-04-27 14:30:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:30:16,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 14:30:16,747 INFO L290 TraceCheckUtils]: 23: Hoare triple {381#false} assume !false; {381#false} is VALID [2022-04-27 14:30:16,748 INFO L290 TraceCheckUtils]: 22: Hoare triple {451#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {381#false} is VALID [2022-04-27 14:30:16,748 INFO L290 TraceCheckUtils]: 21: Hoare triple {447#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {451#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:30:16,749 INFO L272 TraceCheckUtils]: 20: Hoare triple {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {447#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:30:16,750 INFO L290 TraceCheckUtils]: 19: Hoare triple {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !false; {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:30:16,753 INFO L290 TraceCheckUtils]: 18: Hoare triple {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 + ~x~0; {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:30:16,754 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {380#true} {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} #53#return; {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:30:16,754 INFO L290 TraceCheckUtils]: 16: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,754 INFO L290 TraceCheckUtils]: 15: Hoare triple {380#true} assume !(0 == ~cond); {380#true} is VALID [2022-04-27 14:30:16,754 INFO L290 TraceCheckUtils]: 14: Hoare triple {380#true} ~cond := #in~cond; {380#true} is VALID [2022-04-27 14:30:16,754 INFO L272 TraceCheckUtils]: 13: Hoare triple {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {380#true} is VALID [2022-04-27 14:30:16,755 INFO L290 TraceCheckUtils]: 12: Hoare triple {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !false; {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:30:16,756 INFO L290 TraceCheckUtils]: 11: Hoare triple {380#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {467#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-27 14:30:16,756 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {380#true} {380#true} #51#return; {380#true} is VALID [2022-04-27 14:30:16,756 INFO L290 TraceCheckUtils]: 9: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,756 INFO L290 TraceCheckUtils]: 8: Hoare triple {380#true} assume !(0 == ~cond); {380#true} is VALID [2022-04-27 14:30:16,757 INFO L290 TraceCheckUtils]: 7: Hoare triple {380#true} ~cond := #in~cond; {380#true} is VALID [2022-04-27 14:30:16,757 INFO L272 TraceCheckUtils]: 6: Hoare triple {380#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 1 then 1 else 0)); {380#true} is VALID [2022-04-27 14:30:16,757 INFO L290 TraceCheckUtils]: 5: Hoare triple {380#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {380#true} is VALID [2022-04-27 14:30:16,757 INFO L272 TraceCheckUtils]: 4: Hoare triple {380#true} call #t~ret5 := main(); {380#true} is VALID [2022-04-27 14:30:16,757 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {380#true} {380#true} #57#return; {380#true} is VALID [2022-04-27 14:30:16,757 INFO L290 TraceCheckUtils]: 2: Hoare triple {380#true} assume true; {380#true} is VALID [2022-04-27 14:30:16,758 INFO L290 TraceCheckUtils]: 1: Hoare triple {380#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {380#true} is VALID [2022-04-27 14:30:16,758 INFO L272 TraceCheckUtils]: 0: Hoare triple {380#true} call ULTIMATE.init(); {380#true} is VALID [2022-04-27 14:30:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-27 14:30:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:30:16,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137176975] [2022-04-27 14:30:16,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:30:16,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275076005] [2022-04-27 14:30:16,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275076005] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-27 14:30:16,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-27 14:30:16,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-27 14:30:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178763020] [2022-04-27 14:30:16,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:30:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-27 14:30:16,763 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:30:16,763 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 14:30:16,784 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:16,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:30:16,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:30:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:30:16,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-27 14:30:16,785 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 14:30:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:16,867 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-27 14:30:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:30:16,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-27 14:30:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:30:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 14:30:16,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2022-04-27 14:30:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 14:30:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2022-04-27 14:30:16,872 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 23 transitions. [2022-04-27 14:30:16,894 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:30:16,895 INFO L225 Difference]: With dead ends: 29 [2022-04-27 14:30:16,895 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 14:30:16,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-27 14:30:16,898 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:30:16,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:30:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 14:30:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 14:30:16,900 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:30:16,900 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 14:30:16,900 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 14:30:16,901 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 14:30:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:16,901 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 14:30:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:30:16,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:16,901 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:16,901 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-27 14:30:16,901 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-27 14:30:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:30:16,901 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 14:30:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:30:16,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:16,902 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:30:16,902 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:30:16,902 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:30:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-27 14:30:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 14:30:16,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-04-27 14:30:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:30:16,902 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 14:30:16,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 14:30:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:30:16,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:30:16,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 14:30:16,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 14:30:17,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 14:30:17,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-27 14:30:17,169 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-27 14:30:17,169 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-27 14:30:17,169 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-27 14:30:17,170 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-04-27 14:30:17,170 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-27 14:30:17,170 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-27 14:30:17,170 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-27 14:30:17,170 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 17 40) the Hoare annotation is: true [2022-04-27 14:30:17,170 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-04-27 14:30:17,171 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 17 40) no Hoare annotation was computed. [2022-04-27 14:30:17,171 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-27 14:30:17,171 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 17 40) no Hoare annotation was computed. [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-04-27 14:30:17,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-27 14:30:17,172 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-27 14:30:17,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-27 14:30:17,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-27 14:30:17,172 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-27 14:30:17,172 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-27 14:30:17,172 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-27 14:30:17,172 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-04-27 14:30:17,172 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-04-27 14:30:17,173 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-04-27 14:30:17,173 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-04-27 14:30:17,173 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-04-27 14:30:17,173 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-04-27 14:30:17,175 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-27 14:30:17,177 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 14:30:17,180 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 14:30:17,180 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:30:17,181 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-27 14:30:17,182 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:30:17,183 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:30:17,184 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-27 14:30:17,184 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 14:30:17,184 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 14:30:17,184 INFO L163 areAnnotationChecker]: CFG has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 14:30:17,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 02:30:17 BoogieIcfgContainer [2022-04-27 14:30:17,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 14:30:17,191 INFO L158 Benchmark]: Toolchain (without parser) took 2847.00ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 124.8MB in the beginning and 137.7MB in the end (delta: -12.9MB). Peak memory consumption was 23.3MB. Max. memory is 8.0GB. [2022-04-27 14:30:17,192 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 175.1MB. Free memory was 141.7MB in the beginning and 141.6MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 14:30:17,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.65ms. Allocated memory is still 175.1MB. Free memory was 124.6MB in the beginning and 150.6MB in the end (delta: -26.0MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-04-27 14:30:17,192 INFO L158 Benchmark]: Boogie Preprocessor took 30.76ms. Allocated memory is still 175.1MB. Free memory was 150.3MB in the beginning and 148.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 14:30:17,193 INFO L158 Benchmark]: RCFGBuilder took 240.04ms. Allocated memory is still 175.1MB. Free memory was 148.8MB in the beginning and 138.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-27 14:30:17,193 INFO L158 Benchmark]: TraceAbstraction took 2379.37ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 137.7MB in the beginning and 137.7MB in the end (delta: -73.0kB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2022-04-27 14:30:17,194 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 0.29ms. Allocated memory is still 175.1MB. Free memory was 141.7MB in the beginning and 141.6MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.65ms. Allocated memory is still 175.1MB. Free memory was 124.6MB in the beginning and 150.6MB in the end (delta: -26.0MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.76ms. Allocated memory is still 175.1MB. Free memory was 150.3MB in the beginning and 148.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 240.04ms. Allocated memory is still 175.1MB. Free memory was 148.8MB in the beginning and 138.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2379.37ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 137.7MB in the beginning and 137.7MB in the end (delta: -73.0kB). Peak memory consumption was 35.4MB. 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 62 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 15 PreInvPairs, 21 NumberOfFragments, 40 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 2 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: x * 2 == y + y * y RESULT: Ultimate proved your program to be correct! [2022-04-27 14:30:17,231 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...