/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 12:42:34,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 12:42:34,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 12:42:34,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-08 12:42:34,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-08 12:42:34,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-08 12:42:34,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-08 12:42:34,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-08 12:42:34,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-08 12:42:34,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-08 12:42:34,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-08 12:42:34,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-08 12:42:34,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 12:42:34,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 12:42:34,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 12:42:34,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 12:42:34,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 12:42:34,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 12:42:34,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 12:42:34,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 12:42:34,698 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 12:42:34,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 12:42:34,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 12:42:34,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 12:42:34,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 12:42:34,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-08 12:42:34,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-08 12:42:34,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-08 12:42:34,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-08 12:42:34,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-08 12:42:34,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-08 12:42:34,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-08 12:42:34,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-08 12:42:34,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-08 12:42:34,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-08 12:42:34,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-08 12:42:34,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-08 12:42:34,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-08 12:42:34,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-08 12:42:34,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 12:42:34,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 12:42:34,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 12:42:34,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 12:42:34,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 12:42:34,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 12:42:34,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 12:42:34,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 12:42:34,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:42:34,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 12:42:34,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 12:42:34,717 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 12:42:34,717 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 12:42:34,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 12:42:34,717 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 12:42:34,717 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 12:42:34,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 12:42:34,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 12:42:34,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 12:42:34,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 12:42:34,889 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 12:42:34,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-04-08 12:42:34,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54e56e07/5c47085a206d4bc49abaf55ca32d1d52/FLAG70aa4e182 [2022-04-08 12:42:35,267 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 12:42:35,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-04-08 12:42:35,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54e56e07/5c47085a206d4bc49abaf55ca32d1d52/FLAG70aa4e182 [2022-04-08 12:42:35,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54e56e07/5c47085a206d4bc49abaf55ca32d1d52 [2022-04-08 12:42:35,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 12:42:35,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 12:42:35,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 12:42:35,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 12:42:35,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 12:42:35,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9684a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35, skipping insertion in model container [2022-04-08 12:42:35,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 12:42:35,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 12:42:35,442 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/fermat2-ll_valuebound2.c[524,537] [2022-04-08 12:42:35,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:42:35,460 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 12:42:35,467 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/fermat2-ll_valuebound2.c[524,537] [2022-04-08 12:42:35,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 12:42:35,483 INFO L208 MainTranslator]: Completed translation [2022-04-08 12:42:35,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35 WrapperNode [2022-04-08 12:42:35,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 12:42:35,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 12:42:35,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 12:42:35,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 12:42:35,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 12:42:35,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 12:42:35,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 12:42:35,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 12:42:35,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (1/1) ... [2022-04-08 12:42:35,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 12:42:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:42:35,542 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) [2022-04-08 12:42:35,549 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 [2022-04-08 12:42:35,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 12:42:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 12:42:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 12:42:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 12:42:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 12:42:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 12:42:35,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 12:42:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 12:42:35,637 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 12:42:35,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 12:42:35,743 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 12:42:35,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 12:42:35,748 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 12:42:35,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:42:35 BoogieIcfgContainer [2022-04-08 12:42:35,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 12:42:35,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 12:42:35,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 12:42:35,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 12:42:35,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 12:42:35" (1/3) ... [2022-04-08 12:42:35,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421a3003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:42:35, skipping insertion in model container [2022-04-08 12:42:35,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 12:42:35" (2/3) ... [2022-04-08 12:42:35,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421a3003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 12:42:35, skipping insertion in model container [2022-04-08 12:42:35,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 12:42:35" (3/3) ... [2022-04-08 12:42:35,755 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound2.c [2022-04-08 12:42:35,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 12:42:35,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 12:42:35,785 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 12:42:35,789 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 12:42:35,789 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 12:42:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-08 12:42:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-08 12:42:35,807 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:42:35,807 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:42:35,807 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:42:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:42:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 1 times [2022-04-08 12:42:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:35,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [237948573] [2022-04-08 12:42:35,825 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:42:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 2 times [2022-04-08 12:42:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:42:35,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979466181] [2022-04-08 12:42:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:42:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:42:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 12:42:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:35,997 INFO L290 TraceCheckUtils]: 0: Hoare triple {56#(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(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-08 12:42:35,997 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-08 12:42:35,997 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #73#return; {35#true} is VALID [2022-04-08 12:42:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 12:42:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:36,013 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,013 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,014 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,014 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-08 12:42:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-08 12:42:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:36,032 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,032 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,032 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,033 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-08 12:42:36,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-08 12:42:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:36,043 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,043 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,043 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,044 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-08 12:42:36,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-08 12:42:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:36,053 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,053 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,054 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,054 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #67#return; {36#false} is VALID [2022-04-08 12:42:36,055 INFO L272 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {56#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 12:42:36,055 INFO L290 TraceCheckUtils]: 1: Hoare triple {56#(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(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-08 12:42:36,056 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-08 12:42:36,056 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #73#return; {35#true} is VALID [2022-04-08 12:42:36,056 INFO L272 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret6 := main(); {35#true} is VALID [2022-04-08 12:42:36,056 INFO L290 TraceCheckUtils]: 5: Hoare triple {35#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {35#true} is VALID [2022-04-08 12:42:36,056 INFO L272 TraceCheckUtils]: 6: Hoare triple {35#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 2 then 1 else 0)); {35#true} is VALID [2022-04-08 12:42:36,057 INFO L290 TraceCheckUtils]: 7: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,059 INFO L290 TraceCheckUtils]: 8: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,059 INFO L290 TraceCheckUtils]: 9: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,059 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-08 12:42:36,059 INFO L290 TraceCheckUtils]: 11: Hoare triple {36#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {36#false} is VALID [2022-04-08 12:42:36,060 INFO L272 TraceCheckUtils]: 12: Hoare triple {36#false} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 2 then 1 else 0)); {35#true} is VALID [2022-04-08 12:42:36,060 INFO L290 TraceCheckUtils]: 13: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,060 INFO L290 TraceCheckUtils]: 14: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,060 INFO L290 TraceCheckUtils]: 15: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,061 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-08 12:42:36,061 INFO L272 TraceCheckUtils]: 17: Hoare triple {36#false} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {35#true} is VALID [2022-04-08 12:42:36,061 INFO L290 TraceCheckUtils]: 18: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,062 INFO L290 TraceCheckUtils]: 19: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,062 INFO L290 TraceCheckUtils]: 20: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,062 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-08 12:42:36,062 INFO L272 TraceCheckUtils]: 22: Hoare triple {36#false} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {35#true} is VALID [2022-04-08 12:42:36,062 INFO L290 TraceCheckUtils]: 23: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-08 12:42:36,064 INFO L290 TraceCheckUtils]: 24: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-08 12:42:36,064 INFO L290 TraceCheckUtils]: 25: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-08 12:42:36,064 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {36#false} {36#false} #67#return; {36#false} is VALID [2022-04-08 12:42:36,064 INFO L290 TraceCheckUtils]: 27: Hoare triple {36#false} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {36#false} is VALID [2022-04-08 12:42:36,064 INFO L290 TraceCheckUtils]: 28: Hoare triple {36#false} assume !true; {36#false} is VALID [2022-04-08 12:42:36,065 INFO L272 TraceCheckUtils]: 29: Hoare triple {36#false} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {36#false} is VALID [2022-04-08 12:42:36,065 INFO L290 TraceCheckUtils]: 30: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2022-04-08 12:42:36,065 INFO L290 TraceCheckUtils]: 31: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2022-04-08 12:42:36,065 INFO L290 TraceCheckUtils]: 32: Hoare triple {36#false} assume !false; {36#false} is VALID [2022-04-08 12:42:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:42:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:42:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979466181] [2022-04-08 12:42:36,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979466181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:42:36,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:42:36,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:42:36,069 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:42:36,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [237948573] [2022-04-08 12:42:36,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [237948573] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:42:36,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:42:36,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 12:42:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378671341] [2022-04-08 12:42:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:42:36,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-08 12:42:36,075 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:42:36,081 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:42:36,117 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:36,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 12:42:36,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 12:42:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:42:36,150 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:42:36,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:36,251 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2022-04-08 12:42:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 12:42:36,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-08 12:42:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:42:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:42:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2022-04-08 12:42:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:42:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2022-04-08 12:42:36,261 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 80 transitions. [2022-04-08 12:42:36,328 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:36,335 INFO L225 Difference]: With dead ends: 57 [2022-04-08 12:42:36,335 INFO L226 Difference]: Without dead ends: 27 [2022-04-08 12:42:36,337 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 12:42:36,339 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:42:36,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 12:42:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-08 12:42:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-08 12:42:36,359 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:42:36,359 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:42:36,360 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:42:36,360 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:42:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:36,363 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-04-08 12:42:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-08 12:42:36,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:36,364 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:36,364 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-08 12:42:36,364 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-08 12:42:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:36,366 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-04-08 12:42:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-08 12:42:36,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:36,367 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:36,367 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:42:36,367 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:42:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 12:42:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-04-08 12:42:36,370 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-04-08 12:42:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:42:36,370 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-04-08 12:42:36,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-08 12:42:36,370 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 32 transitions. [2022-04-08 12:42:36,398 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-08 12:42:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-08 12:42:36,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:42:36,399 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:42:36,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 12:42:36,399 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:42:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:42:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2022-04-08 12:42:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:36,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1663829015] [2022-04-08 12:42:36,401 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:42:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 2 times [2022-04-08 12:42:36,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:42:36,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901421709] [2022-04-08 12:42:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:42:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:42:36,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:42:36,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826583424] [2022-04-08 12:42:36,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:42:36,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:42:36,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:42:36,432 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) [2022-04-08 12:42:36,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 12:42:36,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 12:42:36,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:42:36,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-08 12:42:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:36,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:42:36,761 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {281#true} is VALID [2022-04-08 12:42:36,761 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#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(13, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-08 12:42:36,761 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:42:36,761 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #73#return; {281#true} is VALID [2022-04-08 12:42:36,762 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-08 12:42:36,762 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {281#true} is VALID [2022-04-08 12:42:36,762 INFO L272 TraceCheckUtils]: 6: Hoare triple {281#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 2 then 1 else 0)); {281#true} is VALID [2022-04-08 12:42:36,762 INFO L290 TraceCheckUtils]: 7: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:42:36,762 INFO L290 TraceCheckUtils]: 8: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:42:36,762 INFO L290 TraceCheckUtils]: 9: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:42:36,763 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {281#true} {281#true} #61#return; {281#true} is VALID [2022-04-08 12:42:36,763 INFO L290 TraceCheckUtils]: 11: Hoare triple {281#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {281#true} is VALID [2022-04-08 12:42:36,763 INFO L272 TraceCheckUtils]: 12: Hoare triple {281#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 2 then 1 else 0)); {281#true} is VALID [2022-04-08 12:42:36,763 INFO L290 TraceCheckUtils]: 13: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:42:36,763 INFO L290 TraceCheckUtils]: 14: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:42:36,763 INFO L290 TraceCheckUtils]: 15: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:42:36,763 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {281#true} {281#true} #63#return; {281#true} is VALID [2022-04-08 12:42:36,764 INFO L272 TraceCheckUtils]: 17: Hoare triple {281#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {281#true} is VALID [2022-04-08 12:42:36,764 INFO L290 TraceCheckUtils]: 18: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:42:36,764 INFO L290 TraceCheckUtils]: 19: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:42:36,764 INFO L290 TraceCheckUtils]: 20: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:42:36,764 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {281#true} {281#true} #65#return; {281#true} is VALID [2022-04-08 12:42:36,764 INFO L272 TraceCheckUtils]: 22: Hoare triple {281#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {281#true} is VALID [2022-04-08 12:42:36,764 INFO L290 TraceCheckUtils]: 23: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-08 12:42:36,764 INFO L290 TraceCheckUtils]: 24: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-08 12:42:36,765 INFO L290 TraceCheckUtils]: 25: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-08 12:42:36,765 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {281#true} {281#true} #67#return; {281#true} is VALID [2022-04-08 12:42:37,368 INFO L290 TraceCheckUtils]: 27: Hoare triple {281#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-08 12:42:37,369 INFO L290 TraceCheckUtils]: 28: Hoare triple {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} assume !false; {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-08 12:42:39,372 WARN L272 TraceCheckUtils]: 29: Hoare triple {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {374#(<= 1 |__VERIFIER_assert_#in~cond|)} is UNKNOWN [2022-04-08 12:42:39,373 INFO L290 TraceCheckUtils]: 30: Hoare triple {374#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {378#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:42:39,373 INFO L290 TraceCheckUtils]: 31: Hoare triple {378#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {282#false} is VALID [2022-04-08 12:42:39,373 INFO L290 TraceCheckUtils]: 32: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-08 12:42:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:42:39,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 12:42:39,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:42:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901421709] [2022-04-08 12:42:39,374 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:42:39,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826583424] [2022-04-08 12:42:39,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826583424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:42:39,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:42:39,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:42:39,375 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:42:39,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1663829015] [2022-04-08 12:42:39,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1663829015] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:42:39,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:42:39,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 12:42:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390336529] [2022-04-08 12:42:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:42:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-08 12:42:39,377 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:42:39,377 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:42:40,520 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:40,520 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 12:42:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 12:42:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 12:42:40,522 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:42:43,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 12:42:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:43,629 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-04-08 12:42:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 12:42:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-08 12:42:43,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:42:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:42:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-08 12:42:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:42:43,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-08 12:42:43,634 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 45 transitions. [2022-04-08 12:42:45,412 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:45,413 INFO L225 Difference]: With dead ends: 38 [2022-04-08 12:42:45,413 INFO L226 Difference]: Without dead ends: 36 [2022-04-08 12:42:45,414 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 12:42:45,415 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-08 12:42:45,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 93 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-04-08 12:42:45,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-08 12:42:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-04-08 12:42:45,424 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:42:45,424 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:42:45,425 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:42:45,425 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:42:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:45,427 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-04-08 12:42:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-08 12:42:45,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:45,427 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:45,427 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Second operand 36 states. [2022-04-08 12:42:45,428 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Second operand 36 states. [2022-04-08 12:42:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:45,432 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-04-08 12:42:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-08 12:42:45,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:45,433 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:45,433 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:42:45,433 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:42:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 12:42:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-04-08 12:42:45,435 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 33 [2022-04-08 12:42:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:42:45,435 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-04-08 12:42:45,435 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-08 12:42:45,436 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 38 transitions. [2022-04-08 12:42:47,989 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 37 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-04-08 12:42:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-08 12:42:47,990 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 12:42:47,990 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 12:42:48,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-08 12:42:48,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:42:48,191 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 12:42:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 12:42:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 1 times [2022-04-08 12:42:48,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:48,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1142558495] [2022-04-08 12:42:48,192 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 12:42:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 2 times [2022-04-08 12:42:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 12:42:48,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963589188] [2022-04-08 12:42:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 12:42:48,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 12:42:48,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 12:42:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516875558] [2022-04-08 12:42:48,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 12:42:48,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 12:42:48,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 12:42:48,212 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) [2022-04-08 12:42:48,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 12:42:48,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 12:42:48,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 12:42:48,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-08 12:42:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 12:42:48,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 12:42:48,403 INFO L272 TraceCheckUtils]: 0: Hoare triple {600#true} call ULTIMATE.init(); {600#true} is VALID [2022-04-08 12:42:48,403 INFO L290 TraceCheckUtils]: 1: Hoare triple {600#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(13, 2);call #Ultimate.allocInit(12, 3); {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 2: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {600#true} {600#true} #73#return; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L272 TraceCheckUtils]: 4: Hoare triple {600#true} call #t~ret6 := main(); {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 5: Hoare triple {600#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L272 TraceCheckUtils]: 6: Hoare triple {600#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 2 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 7: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 8: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 9: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {600#true} {600#true} #61#return; {600#true} is VALID [2022-04-08 12:42:48,404 INFO L290 TraceCheckUtils]: 11: Hoare triple {600#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L272 TraceCheckUtils]: 12: Hoare triple {600#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 2 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 13: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 14: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 15: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {600#true} {600#true} #63#return; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L272 TraceCheckUtils]: 17: Hoare triple {600#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 18: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 19: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,405 INFO L290 TraceCheckUtils]: 20: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,405 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {600#true} {600#true} #65#return; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L272 TraceCheckUtils]: 22: Hoare triple {600#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,406 INFO L290 TraceCheckUtils]: 23: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L290 TraceCheckUtils]: 24: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,406 INFO L290 TraceCheckUtils]: 25: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {600#true} {600#true} #67#return; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L290 TraceCheckUtils]: 27: Hoare triple {600#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L290 TraceCheckUtils]: 28: Hoare triple {600#true} assume !false; {600#true} is VALID [2022-04-08 12:42:48,406 INFO L272 TraceCheckUtils]: 29: Hoare triple {600#true} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,407 INFO L290 TraceCheckUtils]: 30: Hoare triple {600#true} ~cond := #in~cond; {695#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:42:48,407 INFO L290 TraceCheckUtils]: 31: Hoare triple {695#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {699#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:42:48,407 INFO L290 TraceCheckUtils]: 32: Hoare triple {699#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {699#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:42:48,408 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {699#(not (= |__VERIFIER_assert_#in~cond| 0))} {600#true} #69#return; {706#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} is VALID [2022-04-08 12:42:48,408 INFO L290 TraceCheckUtils]: 34: Hoare triple {706#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} assume !(0 != ~r~0); {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-08 12:42:48,409 INFO L272 TraceCheckUtils]: 35: Hoare triple {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {714#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:42:48,410 INFO L290 TraceCheckUtils]: 36: Hoare triple {714#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {718#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:42:48,410 INFO L290 TraceCheckUtils]: 37: Hoare triple {718#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {601#false} is VALID [2022-04-08 12:42:48,410 INFO L290 TraceCheckUtils]: 38: Hoare triple {601#false} assume !false; {601#false} is VALID [2022-04-08 12:42:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:42:48,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 12:42:48,795 INFO L290 TraceCheckUtils]: 38: Hoare triple {601#false} assume !false; {601#false} is VALID [2022-04-08 12:42:48,795 INFO L290 TraceCheckUtils]: 37: Hoare triple {718#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {601#false} is VALID [2022-04-08 12:42:48,796 INFO L290 TraceCheckUtils]: 36: Hoare triple {714#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {718#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 12:42:48,797 INFO L272 TraceCheckUtils]: 35: Hoare triple {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {714#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 12:42:48,797 INFO L290 TraceCheckUtils]: 34: Hoare triple {737#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} assume !(0 != ~r~0); {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-08 12:42:48,798 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {699#(not (= |__VERIFIER_assert_#in~cond| 0))} {600#true} #69#return; {737#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} is VALID [2022-04-08 12:42:48,798 INFO L290 TraceCheckUtils]: 32: Hoare triple {699#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {699#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:42:48,798 INFO L290 TraceCheckUtils]: 31: Hoare triple {750#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {699#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 30: Hoare triple {600#true} ~cond := #in~cond; {750#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 12:42:48,799 INFO L272 TraceCheckUtils]: 29: Hoare triple {600#true} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 28: Hoare triple {600#true} assume !false; {600#true} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 27: Hoare triple {600#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {600#true} is VALID [2022-04-08 12:42:48,799 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {600#true} {600#true} #67#return; {600#true} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 25: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 24: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,799 INFO L290 TraceCheckUtils]: 23: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,799 INFO L272 TraceCheckUtils]: 22: Hoare triple {600#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,800 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {600#true} {600#true} #65#return; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 20: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 19: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 18: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L272 TraceCheckUtils]: 17: Hoare triple {600#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,800 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {600#true} {600#true} #63#return; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 15: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 14: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 13: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,800 INFO L272 TraceCheckUtils]: 12: Hoare triple {600#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 2 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,800 INFO L290 TraceCheckUtils]: 11: Hoare triple {600#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {600#true} {600#true} #61#return; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 9: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 8: Hoare triple {600#true} assume !(0 == ~cond); {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 7: Hoare triple {600#true} ~cond := #in~cond; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L272 TraceCheckUtils]: 6: Hoare triple {600#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 2 then 1 else 0)); {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 5: Hoare triple {600#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L272 TraceCheckUtils]: 4: Hoare triple {600#true} call #t~ret6 := main(); {600#true} is VALID [2022-04-08 12:42:48,801 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {600#true} {600#true} #73#return; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 2: Hoare triple {600#true} assume true; {600#true} is VALID [2022-04-08 12:42:48,801 INFO L290 TraceCheckUtils]: 1: Hoare triple {600#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(13, 2);call #Ultimate.allocInit(12, 3); {600#true} is VALID [2022-04-08 12:42:48,801 INFO L272 TraceCheckUtils]: 0: Hoare triple {600#true} call ULTIMATE.init(); {600#true} is VALID [2022-04-08 12:42:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 12:42:48,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 12:42:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963589188] [2022-04-08 12:42:48,802 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 12:42:48,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516875558] [2022-04-08 12:42:48,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516875558] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 12:42:48,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 12:42:48,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-08 12:42:48,802 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 12:42:48,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1142558495] [2022-04-08 12:42:48,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1142558495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 12:42:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 12:42:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 12:42:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010877857] [2022-04-08 12:42:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 12:42:48,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-04-08 12:42:48,803 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 12:42:48,804 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:42:48,823 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:48,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 12:42:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 12:42:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 12:42:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-08 12:42:48,824 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:42:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:49,094 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-04-08 12:42:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 12:42:49,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-04-08 12:42:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 12:42:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:42:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-08 12:42:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:42:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-08 12:42:49,097 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 32 transitions. [2022-04-08 12:42:49,128 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:49,128 INFO L225 Difference]: With dead ends: 33 [2022-04-08 12:42:49,128 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 12:42:49,129 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-08 12:42:49,130 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 12:42:49,130 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 114 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 12:42:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 12:42:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 12:42:49,131 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 12:42:49,131 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) [2022-04-08 12:42:49,131 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) [2022-04-08 12:42:49,131 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) [2022-04-08 12:42:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:49,131 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:42:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:42:49,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:49,131 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:49,131 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. [2022-04-08 12:42:49,131 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. [2022-04-08 12:42:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 12:42:49,131 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 12:42:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:42:49,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:49,131 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 12:42:49,132 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 12:42:49,132 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 12:42:49,132 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) [2022-04-08 12:42:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 12:42:49,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-04-08 12:42:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 12:42:49,132 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 12:42:49,132 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-08 12:42:49,132 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 12:42:49,132 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 12:42:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 12:42:49,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 12:42:49,134 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 12:42:49,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 12:42:49,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 12:42:49,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 12:42:49,456 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2022-04-08 12:42:49,456 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2022-04-08 12:42:49,457 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L9(line 9) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L9-2(lines 8 10) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 8 10) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (+ (* main_~v~0 2) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~u~0 2)) (.cse3 (* main_~A~0 4))) (and (= .cse0 (+ .cse1 .cse2 .cse3 (* main_~r~0 4))) (= .cse0 (+ .cse1 .cse2 .cse3)))) [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 51) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-04-08 12:42:49,457 INFO L885 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 51) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-08 12:42:49,458 INFO L878 garLoopResultBuilder]: At program point L36-1(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L878 garLoopResultBuilder]: At program point L39(lines 39 45) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-08 12:42:49,458 INFO L878 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,458 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 12:42:49,459 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-04-08 12:42:49,459 INFO L878 garLoopResultBuilder]: At program point L13(lines 13 14) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:42:49,459 INFO L878 garLoopResultBuilder]: At program point L12(lines 12 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:42:49,459 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:42:49,459 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 11 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-08 12:42:49,459 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-08 12:42:49,461 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-08 12:42:49,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 12:42:49,464 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 12:42:49,480 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 12:42:49,489 INFO L163 areAnnotationChecker]: CFG has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 12:42:49,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 12:42:49 BoogieIcfgContainer [2022-04-08 12:42:49,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 12:42:49,498 INFO L158 Benchmark]: Toolchain (without parser) took 14213.49ms. Allocated memory was 191.9MB in the beginning and 238.0MB in the end (delta: 46.1MB). Free memory was 137.8MB in the beginning and 131.1MB in the end (delta: 6.7MB). Peak memory consumption was 52.3MB. Max. memory is 8.0GB. [2022-04-08 12:42:49,498 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 12:42:49,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.14ms. Allocated memory was 191.9MB in the beginning and 238.0MB in the end (delta: 46.1MB). Free memory was 137.6MB in the beginning and 208.5MB in the end (delta: -71.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-04-08 12:42:49,499 INFO L158 Benchmark]: Boogie Preprocessor took 32.23ms. Allocated memory is still 238.0MB. Free memory was 208.5MB in the beginning and 206.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 12:42:49,499 INFO L158 Benchmark]: RCFGBuilder took 232.79ms. Allocated memory is still 238.0MB. Free memory was 206.8MB in the beginning and 195.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-08 12:42:49,499 INFO L158 Benchmark]: TraceAbstraction took 13746.56ms. Allocated memory is still 238.0MB. Free memory was 194.6MB in the beginning and 131.1MB in the end (delta: 63.5MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. [2022-04-08 12:42:49,500 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 0.11ms. Allocated memory is still 191.9MB. Free memory is still 154.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.14ms. Allocated memory was 191.9MB in the beginning and 238.0MB in the end (delta: 46.1MB). Free memory was 137.6MB in the beginning and 208.5MB in the end (delta: -71.0MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.23ms. Allocated memory is still 238.0MB. Free memory was 208.5MB in the beginning and 206.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 232.79ms. Allocated memory is still 238.0MB. Free memory was 206.8MB in the beginning and 195.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 13746.56ms. Allocated memory is still 238.0MB. Free memory was 194.6MB in the beginning and 131.1MB in the end (delta: 63.5MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 241 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 80 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 80 PreInvPairs, 113 NumberOfFragments, 184 HoareAnnotationTreeSize, 80 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 32 FomulaSimplificationsInter, 168 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: v * 2 + u * u == v * v + u * 2 + A * 4 + r * 4 - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-08 12:42:49,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...