/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:30:58,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:30:58,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:30:58,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 22:30:58,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 22:30:58,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 22:30:58,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 22:30:58,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 22:30:58,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 22:30:58,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 22:30:58,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 22:30:58,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 22:30:58,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:30:58,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:30:58,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:30:58,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:30:58,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:30:58,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:30:58,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:30:58,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:30:58,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:30:58,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:30:58,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:30:58,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:30:58,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-09 22:30:58,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-09 22:30:58,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-09 22:30:58,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-09 22:30:58,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-09 22:30:58,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-09 22:30:58,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-09 22:30:58,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-09 22:30:58,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-09 22:30:58,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-09 22:30:58,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-09 22:30:58,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-09 22:30:58,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-09 22:30:58,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-09 22:30:58,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:30:58,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:30:58,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:30:58,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:30:59,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:30:59,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:30:59,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:30:59,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:30:59,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:30:59,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:30:59,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:30:59,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:30:59,026 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:30:59,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:30:59,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:30:59,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:30:59,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:30:59,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:30:59,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:30:59,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:30:59,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:30:59,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:30:59,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:30:59,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:30:59,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:30:59,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:30:59,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:30:59,225 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:30:59,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2-ll.c [2022-01-09 22:30:59,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a9ca933/92d095c038a34bf5831d7ad85cffb51a/FLAG369f0c54d [2022-01-09 22:30:59,648 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:30:59,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2-ll.c [2022-01-09 22:30:59,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a9ca933/92d095c038a34bf5831d7ad85cffb51a/FLAG369f0c54d [2022-01-09 22:30:59,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a9ca933/92d095c038a34bf5831d7ad85cffb51a [2022-01-09 22:30:59,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:30:59,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:30:59,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:30:59,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:30:59,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:30:59,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa13fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59, skipping insertion in model container [2022-01-09 22:30:59,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:30:59,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:30:59,828 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/fermat2-ll.c[524,537] [2022-01-09 22:30:59,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:30:59,852 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:30:59,862 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/fermat2-ll.c[524,537] [2022-01-09 22:30:59,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:30:59,885 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:30:59,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59 WrapperNode [2022-01-09 22:30:59,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:30:59,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:30:59,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:30:59,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:30:59,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,912 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-01-09 22:30:59,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:30:59,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:30:59,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:30:59,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:30:59,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:30:59,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:30:59,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:30:59,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:30:59,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (1/1) ... [2022-01-09 22:30:59,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:30:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:59,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 22:30:59,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 22:31:00,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:31:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 22:31:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 22:31:00,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:31:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:31:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:31:00,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:31:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:31:00,042 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:31:00,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:31:00,188 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:31:00,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:31:00,193 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 22:31:00,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:00 BoogieIcfgContainer [2022-01-09 22:31:00,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:31:00,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:31:00,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:31:00,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:31:00,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:30:59" (1/3) ... [2022-01-09 22:31:00,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3230c14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:00, skipping insertion in model container [2022-01-09 22:31:00,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:59" (2/3) ... [2022-01-09 22:31:00,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3230c14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:31:00, skipping insertion in model container [2022-01-09 22:31:00,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:31:00" (3/3) ... [2022-01-09 22:31:00,201 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll.c [2022-01-09 22:31:00,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:31:00,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:31:00,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:31:00,252 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:31:00,252 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:31:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:31:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-09 22:31:00,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:00,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:00,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1928678447, now seen corresponding path program 1 times [2022-01-09 22:31:00,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:00,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477393867] [2022-01-09 22:31:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:00,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:00,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:00,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553255401] [2022-01-09 22:31:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:00,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:00,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:00,358 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) [2022-01-09 22:31:00,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:31:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:00,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-09 22:31:00,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 22:31:00,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:31:00,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:00,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477393867] [2022-01-09 22:31:00,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:00,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553255401] [2022-01-09 22:31:00,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553255401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:00,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:00,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:31:00,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697785659] [2022-01-09 22:31:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:00,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:31:00,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:00,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:31:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:00,525 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:31:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:00,538 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-01-09 22:31:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:31:00,539 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-01-09 22:31:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:00,546 INFO L225 Difference]: With dead ends: 45 [2022-01-09 22:31:00,547 INFO L226 Difference]: Without dead ends: 20 [2022-01-09 22:31:00,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:31:00,552 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:00,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-09 22:31:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-09 22:31:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:31:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-09 22:31:00,578 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2022-01-09 22:31:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:00,578 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-09 22:31:00,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:31:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-09 22:31:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-09 22:31:00,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:00,580 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:00,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:00,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-09 22:31:00,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1584630691, now seen corresponding path program 1 times [2022-01-09 22:31:00,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252385214] [2022-01-09 22:31:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:00,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:00,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:00,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407304411] [2022-01-09 22:31:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:00,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:00,815 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) [2022-01-09 22:31:00,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:31:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:00,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-09 22:31:00,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:31:01,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:31:01,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:01,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252385214] [2022-01-09 22:31:01,378 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:01,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407304411] [2022-01-09 22:31:01,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407304411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:31:01,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:31:01,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-09 22:31:01,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64986294] [2022-01-09 22:31:01,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:31:01,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-09 22:31:01,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:01,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-09 22:31:01,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 22:31:01,380 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-09 22:31:03,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-09 22:31:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:03,193 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-01-09 22:31:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:31:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-01-09 22:31:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:03,194 INFO L225 Difference]: With dead ends: 31 [2022-01-09 22:31:03,194 INFO L226 Difference]: Without dead ends: 29 [2022-01-09 22:31:03,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-09 22:31:03,195 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:03,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-09 22:31:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-09 22:31:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-01-09 22:31:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:31:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-09 22:31:03,203 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2022-01-09 22:31:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:03,204 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-09 22:31:03,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-09 22:31:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-09 22:31:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-09 22:31:03,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:31:03,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:31:03,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:03,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-09 22:31:03,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:31:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:31:03,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1566339285, now seen corresponding path program 1 times [2022-01-09 22:31:03,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:31:03,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354736461] [2022-01-09 22:31:03,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:03,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:31:03,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-09 22:31:03,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533965689] [2022-01-09 22:31:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:31:03,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:31:03,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:31:03,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 22:31:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:31:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-09 22:31:03,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:31:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:31:03,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:31:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:31:03,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:31:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354736461] [2022-01-09 22:31:03,722 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-09 22:31:03,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533965689] [2022-01-09 22:31:03,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533965689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:31:03,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:31:03,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-01-09 22:31:03,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912030343] [2022-01-09 22:31:03,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:31:03,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-09 22:31:03,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:31:03,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-09 22:31:03,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-09 22:31:03,724 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-09 22:31:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:31:03,777 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-01-09 22:31:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 22:31:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-01-09 22:31:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:31:03,778 INFO L225 Difference]: With dead ends: 28 [2022-01-09 22:31:03,778 INFO L226 Difference]: Without dead ends: 0 [2022-01-09 22:31:03,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-01-09 22:31:03,780 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:31:03,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:31:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-09 22:31:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-09 22:31:03,781 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) [2022-01-09 22:31:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-09 22:31:03,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-01-09 22:31:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:31:03,781 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-09 22:31:03,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-09 22:31:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-09 22:31:03,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-09 22:31:03,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:31:03,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 22:31:03,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:31:04,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-09 22:31:04,019 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-09 22:31:04,019 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 44) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~A~0#1| 4)) (.cse1 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~u~0#1|)) (.cse3 (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) (and (= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 4) .cse1 .cse2) .cse3) (= (+ .cse0 .cse1 .cse2) .cse3))) [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-01-09 22:31:04,020 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-01-09 22:31:04,020 INFO L861 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-01-09 22:31:04,020 INFO L861 garLoopResultBuilder]: At program point L48(lines 19 49) the Hoare annotation is: true [2022-01-09 22:31:04,020 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 33 44) no Hoare annotation was computed. [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-09 22:31:04,020 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-01-09 22:31:04,021 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 43) no Hoare annotation was computed. [2022-01-09 22:31:04,021 INFO L854 garLoopResultBuilder]: At program point L37-2(lines 33 44) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2022-01-09 22:31:04,021 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-01-09 22:31:04,021 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-01-09 22:31:04,021 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-01-09 22:31:04,021 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-01-09 22:31:04,022 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-01-09 22:31:04,022 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-01-09 22:31:04,022 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-01-09 22:31:04,022 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-01-09 22:31:04,023 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-01-09 22:31:04,023 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-01-09 22:31:04,025 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-09 22:31:04,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:31:04,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:31:04 BoogieIcfgContainer [2022-01-09 22:31:04,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:31:04,041 INFO L158 Benchmark]: Toolchain (without parser) took 4370.26ms. Allocated memory is still 255.9MB. Free memory was 202.6MB in the beginning and 132.4MB in the end (delta: 70.3MB). Peak memory consumption was 69.7MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,042 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 218.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:31:04,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.26ms. Allocated memory is still 255.9MB. Free memory was 202.5MB in the beginning and 227.3MB in the end (delta: -24.8MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.13ms. Allocated memory is still 255.9MB. Free memory was 227.3MB in the beginning and 225.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,042 INFO L158 Benchmark]: Boogie Preprocessor took 24.53ms. Allocated memory is still 255.9MB. Free memory was 225.7MB in the beginning and 224.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,043 INFO L158 Benchmark]: RCFGBuilder took 256.26ms. Allocated memory is still 255.9MB. Free memory was 224.7MB in the beginning and 214.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,043 INFO L158 Benchmark]: TraceAbstraction took 3844.74ms. Allocated memory is still 255.9MB. Free memory was 213.7MB in the beginning and 132.4MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2022-01-09 22:31:04,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 218.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.26ms. Allocated memory is still 255.9MB. Free memory was 202.5MB in the beginning and 227.3MB in the end (delta: -24.8MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.13ms. Allocated memory is still 255.9MB. Free memory was 227.3MB in the beginning and 225.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.53ms. Allocated memory is still 255.9MB. Free memory was 225.7MB in the beginning and 224.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 256.26ms. Allocated memory is still 255.9MB. Free memory was 224.7MB in the beginning and 214.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3844.74ms. Allocated memory is still 255.9MB. Free memory was 213.7MB in the beginning and 132.4MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 152 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 58 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 87 HoareAnnotationTreeSize, 14 FomulaSimplifications, 100 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 9 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-09 22:31:04,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...