/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 22:41:10,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 22:41:10,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 22:41:10,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 22:41:10,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 22:41:10,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 22:41:10,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 22:41:10,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 22:41:10,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 22:41:10,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 22:41:10,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 22:41:10,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 22:41:10,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 22:41:10,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 22:41:10,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 22:41:10,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 22:41:10,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 22:41:10,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 22:41:10,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 22:41:10,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 22:41:10,983 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 22:41:10,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 22:41:10,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 22:41:10,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 22:41:10,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 22:41:10,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 22:41:10,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 22:41:10,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 22:41:10,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 22:41:10,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 22:41:11,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 22:41:11,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 22:41:11,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 22:41:11,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 22:41:11,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 22:41:11,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 22:41:11,008 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 22:41:11,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 22:41:11,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 22:41:11,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 22:41:11,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 22:41:11,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 22:41:11,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:41:11,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 22:41:11,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 22:41:11,011 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 22:41:11,011 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 22:41:11,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 22:41:11,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 22:41:11,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 22:41:11,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 22:41:11,208 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 22:41:11,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2022-03-18 22:41:11,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d3a11fa/dc245286d3534ddd9fa524159d6fc1f5/FLAG50141bb7c [2022-03-18 22:41:11,565 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 22:41:11,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i [2022-03-18 22:41:11,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d3a11fa/dc245286d3534ddd9fa524159d6fc1f5/FLAG50141bb7c [2022-03-18 22:41:11,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d3a11fa/dc245286d3534ddd9fa524159d6fc1f5 [2022-03-18 22:41:11,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 22:41:11,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 22:41:11,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 22:41:11,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 22:41:12,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 22:41:12,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:41:11" (1/1) ... [2022-03-18 22:41:12,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d3e63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12, skipping insertion in model container [2022-03-18 22:41:12,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:41:11" (1/1) ... [2022-03-18 22:41:12,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 22:41:12,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 22:41:12,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2022-03-18 22:41:12,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:41:12,180 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 22:41:12,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark11_linear.i[868,881] [2022-03-18 22:41:12,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:41:12,201 INFO L208 MainTranslator]: Completed translation [2022-03-18 22:41:12,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12 WrapperNode [2022-03-18 22:41:12,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 22:41:12,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 22:41:12,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 22:41:12,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 22:41:12,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 22:41:12,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 22:41:12,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 22:41:12,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 22:41:12,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:41:12,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:41:12,261 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) [2022-03-18 22:41:12,278 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 [2022-03-18 22:41:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 22:41:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 22:41:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 22:41:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 22:41:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 22:41:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 22:41:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 22:41:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 22:41:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 22:41:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 22:41:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 22:41:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 22:41:12,355 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 22:41:12,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 22:41:12,474 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 22:41:12,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 22:41:12,478 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 22:41:12,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:41:12 BoogieIcfgContainer [2022-03-18 22:41:12,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 22:41:12,479 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 22:41:12,480 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 22:41:12,488 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 22:41:12,491 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:41:12" (1/1) ... [2022-03-18 22:41:12,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:41:12 BasicIcfg [2022-03-18 22:41:12,640 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 22:41:12,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 22:41:12,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 22:41:12,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 22:41:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 10:41:11" (1/4) ... [2022-03-18 22:41:12,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4f1c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:41:12, skipping insertion in model container [2022-03-18 22:41:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:41:12" (2/4) ... [2022-03-18 22:41:12,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4f1c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:41:12, skipping insertion in model container [2022-03-18 22:41:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:41:12" (3/4) ... [2022-03-18 22:41:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4f1c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 10:41:12, skipping insertion in model container [2022-03-18 22:41:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:41:12" (4/4) ... [2022-03-18 22:41:12,647 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark11_linear.iqvasr [2022-03-18 22:41:12,650 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 22:41:12,650 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 22:41:12,682 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 22:41:12,686 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-18 22:41:12,686 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 22:41:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 22:41:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 22:41:12,699 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:41:12,700 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:41:12,700 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:41:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:41:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-03-18 22:41:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:41:12,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698925858] [2022-03-18 22:41:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:41:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:41:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:41:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:41:12,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:41:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698925858] [2022-03-18 22:41:12,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698925858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:41:12,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:41:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 22:41:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518052959] [2022-03-18 22:41:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:41:12,846 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 22:41:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:41:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 22:41:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:41:12,872 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:41:12,911 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-18 22:41:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 22:41:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 22:41:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:41:12,931 INFO L225 Difference]: With dead ends: 32 [2022-03-18 22:41:12,931 INFO L226 Difference]: Without dead ends: 13 [2022-03-18 22:41:12,933 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:41:12,937 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:41:12,937 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:41:12,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-18 22:41:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-18 22:41:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-18 22:41:12,966 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-03-18 22:41:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:41:12,966 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-18 22:41:12,967 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-18 22:41:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 22:41:12,968 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:41:12,968 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:41:12,968 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 22:41:12,968 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:41:12,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:41:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-03-18 22:41:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:41:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609002271] [2022-03-18 22:41:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:41:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:41:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:41:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:41:13,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:41:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609002271] [2022-03-18 22:41:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609002271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:41:13,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:41:13,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 22:41:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140690528] [2022-03-18 22:41:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:41:13,053 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 22:41:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:41:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 22:41:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 22:41:13,055 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:41:13,104 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-18 22:41:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 22:41:13,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 22:41:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:41:13,105 INFO L225 Difference]: With dead ends: 19 [2022-03-18 22:41:13,105 INFO L226 Difference]: Without dead ends: 14 [2022-03-18 22:41:13,106 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 22:41:13,107 INFO L912 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:41:13,107 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:41:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-18 22:41:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-18 22:41:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-18 22:41:13,111 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-18 22:41:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:41:13,111 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-18 22:41:13,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-18 22:41:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 22:41:13,111 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:41:13,111 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:41:13,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 22:41:13,112 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:41:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:41:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 306506437, now seen corresponding path program 1 times [2022-03-18 22:41:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:41:13,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445426567] [2022-03-18 22:41:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:41:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:41:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:41:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:41:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:41:13,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:41:13,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445426567] [2022-03-18 22:41:13,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445426567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:41:13,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:41:13,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 22:41:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062562553] [2022-03-18 22:41:13,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:41:13,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 22:41:13,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:41:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 22:41:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 22:41:13,168 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:41:13,183 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-03-18 22:41:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 22:41:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 22:41:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:41:13,183 INFO L225 Difference]: With dead ends: 14 [2022-03-18 22:41:13,183 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 22:41:13,184 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 22:41:13,188 INFO L912 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:41:13,190 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:41:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 22:41:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 22:41:13,191 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) [2022-03-18 22:41:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 22:41:13,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-03-18 22:41:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:41:13,192 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 22:41:13,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:41:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 22:41:13,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 22:41:13,194 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 22:41:13,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 22:41:13,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 22:41:13,214 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|)) [2022-03-18 22:41:13,214 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 22:41:13,215 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 22:41:13,215 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 22:41:13,216 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 22:41:13,216 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 22:41:13,216 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 22:41:13,216 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 28) the Hoare annotation is: true [2022-03-18 22:41:13,216 INFO L882 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-03-18 22:41:13,216 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 28) no Hoare annotation was computed. [2022-03-18 22:41:13,216 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 25) the Hoare annotation is: (and (<= 1 main_~n~0) (<= (+ main_~x~0 1) main_~n~0)) [2022-03-18 22:41:13,217 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 28) no Hoare annotation was computed. [2022-03-18 22:41:13,217 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2022-03-18 22:41:13,217 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-03-18 22:41:13,217 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-18 22:41:13,217 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-03-18 22:41:13,217 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-03-18 22:41:13,218 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-03-18 22:41:13,218 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-03-18 22:41:13,218 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-03-18 22:41:13,220 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-18 22:41:13,223 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 22:41:13,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 10:41:13 BasicIcfg [2022-03-18 22:41:13,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 22:41:13,240 INFO L158 Benchmark]: Toolchain (without parser) took 1243.64ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 130.0MB in the beginning and 172.3MB in the end (delta: -42.3MB). Peak memory consumption was 23.9MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,240 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 22:41:13,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.51ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 129.8MB in the beginning and 223.9MB in the end (delta: -94.1MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,241 INFO L158 Benchmark]: Boogie Preprocessor took 22.38ms. Allocated memory is still 253.8MB. Free memory was 223.9MB in the beginning and 222.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,241 INFO L158 Benchmark]: RCFGBuilder took 253.09ms. Allocated memory is still 253.8MB. Free memory was 222.6MB in the beginning and 212.7MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,241 INFO L158 Benchmark]: IcfgTransformer took 160.12ms. Allocated memory is still 253.8MB. Free memory was 212.7MB in the beginning and 207.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,241 INFO L158 Benchmark]: TraceAbstraction took 598.54ms. Allocated memory is still 253.8MB. Free memory was 206.6MB in the beginning and 172.3MB in the end (delta: 34.3MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-03-18 22:41:13,243 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 186.6MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.51ms. Allocated memory was 186.6MB in the beginning and 253.8MB in the end (delta: 67.1MB). Free memory was 129.8MB in the beginning and 223.9MB in the end (delta: -94.1MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.38ms. Allocated memory is still 253.8MB. Free memory was 223.9MB in the beginning and 222.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 253.09ms. Allocated memory is still 253.8MB. Free memory was 222.6MB in the beginning and 212.7MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 160.12ms. Allocated memory is still 253.8MB. Free memory was 212.7MB in the beginning and 207.2MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 598.54ms. Allocated memory is still 253.8MB. Free memory was 206.6MB in the beginning and 172.3MB in the end (delta: 34.3MB). Peak memory consumption was 34.6MB. 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: 16]: 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 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 38 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 10 NumberOfFragments, 21 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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: 23]: Loop Invariant Derived loop invariant: 1 <= n && x + 1 <= n RESULT: Ultimate proved your program to be correct! [2022-03-18 22:41:13,296 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...