/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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 20:53:49,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 20:53:49,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 20:53:49,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 20:53:49,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 20:53:49,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 20:53:49,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 20:53:49,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 20:53:49,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 20:53:49,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 20:53:49,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 20:53:49,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 20:53:49,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 20:53:49,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 20:53:49,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 20:53:49,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 20:53:49,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 20:53:49,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 20:53:49,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 20:53:49,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 20:53:49,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 20:53:49,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 20:53:49,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 20:53:49,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 20:53:49,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 20:53:49,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 20:53:49,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 20:53:49,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 20:53:49,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 20:53:49,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 20:53:49,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 20:53:49,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 20:53:49,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 20:53:49,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 20:53:49,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 20:53:49,852 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 20:53:49,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 20:53:49,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 20:53:49,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 20:53:49,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 20:53:49,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 20:53:49,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 20:53:49,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 20:53:49,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 20:53:49,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 20:53:49,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 20:53:49,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 20:53:49,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 20:53:49,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:53:49,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 20:53:49,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 20:53:49,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 20:53:49,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 20:53:49,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 20:53:49,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 20:53:49,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 20:53:49,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 20:53:49,856 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 20:53:49,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 20:53:50,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 20:53:50,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 20:53:50,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 20:53:50,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 20:53:50,086 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 20:53:50,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-02-23 20:53:50,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cac60a53/27286e7103a0469882ad40085d09055f/FLAG3fc804bc8 [2022-02-23 20:53:50,471 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 20:53:50,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-02-23 20:53:50,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cac60a53/27286e7103a0469882ad40085d09055f/FLAG3fc804bc8 [2022-02-23 20:53:50,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cac60a53/27286e7103a0469882ad40085d09055f [2022-02-23 20:53:50,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 20:53:50,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 20:53:50,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 20:53:50,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 20:53:50,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 20:53:50,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:53:50" (1/1) ... [2022-02-23 20:53:50,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c6ef77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:50, skipping insertion in model container [2022-02-23 20:53:50,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:53:50" (1/1) ... [2022-02-23 20:53:50,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 20:53:50,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 20:53:51,058 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-new/count_by_1_variant.i[891,904] [2022-02-23 20:53:51,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:53:51,070 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 20:53:51,085 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-new/count_by_1_variant.i[891,904] [2022-02-23 20:53:51,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:53:51,096 INFO L208 MainTranslator]: Completed translation [2022-02-23 20:53:51,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51 WrapperNode [2022-02-23 20:53:51,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 20:53:51,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 20:53:51,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 20:53:51,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 20:53:51,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 20:53:51,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 20:53:51,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 20:53:51,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 20:53:51,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:53:51,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:51,147 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) [2022-02-23 20:53:51,148 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 [2022-02-23 20:53:51,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 20:53:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 20:53:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 20:53:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 20:53:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 20:53:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 20:53:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 20:53:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 20:53:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 20:53:51,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 20:53:51,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 20:53:51,229 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 20:53:51,230 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 20:53:51,307 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 20:53:51,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 20:53:51,312 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 20:53:51,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:53:51 BoogieIcfgContainer [2022-02-23 20:53:51,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 20:53:51,314 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 20:53:51,314 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 20:53:51,315 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 20:53:51,317 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:53:51" (1/1) ... [2022-02-23 20:53:51,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:53:51 BasicIcfg [2022-02-23 20:53:51,331 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 20:53:51,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 20:53:51,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 20:53:51,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 20:53:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 08:53:50" (1/4) ... [2022-02-23 20:53:51,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f04aa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:53:51, skipping insertion in model container [2022-02-23 20:53:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:53:51" (2/4) ... [2022-02-23 20:53:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f04aa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:53:51, skipping insertion in model container [2022-02-23 20:53:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:53:51" (3/4) ... [2022-02-23 20:53:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f04aa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:53:51, skipping insertion in model container [2022-02-23 20:53:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:53:51" (4/4) ... [2022-02-23 20:53:51,341 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.iqvasr [2022-02-23 20:53:51,345 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 20:53:51,345 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 20:53:51,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 20:53:51,391 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=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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 20:53:51,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 20:53:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-02-23 20:53:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-23 20:53:51,406 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:51,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:51,407 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:51,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1861424559, now seen corresponding path program 1 times [2022-02-23 20:53:51,418 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:51,418 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098152932] [2022-02-23 20:53:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:51,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:53:51,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:51,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098152932] [2022-02-23 20:53:51,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098152932] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:53:51,596 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:53:51,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:53:51,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090420993] [2022-02-23 20:53:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:53:51,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:53:51,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:53:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:53:51,629 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-02-23 20:53:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:51,776 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-02-23 20:53:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:53:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-02-23 20:53:51,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:51,784 INFO L225 Difference]: With dead ends: 41 [2022-02-23 20:53:51,784 INFO L226 Difference]: Without dead ends: 22 [2022-02-23 20:53:51,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:53:51,789 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:51,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:53:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-23 20:53:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-02-23 20:53:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 20:53:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-02-23 20:53:51,816 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2022-02-23 20:53:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:51,816 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-02-23 20:53:51,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-02-23 20:53:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-02-23 20:53:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:53:51,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:51,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:51,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 20:53:51,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1022018108, now seen corresponding path program 1 times [2022-02-23 20:53:51,819 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:51,819 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347373201] [2022-02-23 20:53:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-02-23 20:53:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:53:51,914 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:51,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347373201] [2022-02-23 20:53:51,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347373201] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:53:51,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303258398] [2022-02-23 20:53:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:51,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:51,917 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) [2022-02-23 20:53:51,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 20:53:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 20:53:51,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:53:52,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:53:52,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303258398] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:52,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:52,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-02-23 20:53:52,211 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69879000] [2022-02-23 20:53:52,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:52,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-23 20:53:52,218 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-23 20:53:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-02-23 20:53:52,219 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 20:53:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:52,339 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-02-23 20:53:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 20:53:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2022-02-23 20:53:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:52,340 INFO L225 Difference]: With dead ends: 26 [2022-02-23 20:53:52,340 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 20:53:52,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-02-23 20:53:52,348 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:52,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 35 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:53:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 20:53:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 20:53:52,352 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) [2022-02-23 20:53:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 20:53:52,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-02-23 20:53:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:52,352 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 20:53:52,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 9 states have internal predecessors, (22), 6 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 20:53:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 20:53:52,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 20:53:52,355 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 20:53:52,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 20:53:52,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:52,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 20:53:52,616 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 20:53:52,616 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:53:52,617 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:53:52,617 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 20:53:52,617 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 20:53:52,617 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 20:53:52,617 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 20:53:52,617 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2022-02-23 20:53:52,618 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2022-02-23 20:53:52,618 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (<= main_~i~0 999999) [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 24 30) no Hoare annotation was computed. [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 26 28) no Hoare annotation was computed. [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 24 30) no Hoare annotation was computed. [2022-02-23 20:53:52,618 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-02-23 20:53:52,618 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-02-23 20:53:52,619 INFO L858 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-02-23 20:53:52,619 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-02-23 20:53:52,619 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-02-23 20:53:52,622 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-23 20:53:52,623 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 20:53:52,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:53:52 BasicIcfg [2022-02-23 20:53:52,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 20:53:52,633 INFO L158 Benchmark]: Toolchain (without parser) took 1738.03ms. Allocated memory was 191.9MB in the beginning and 248.5MB in the end (delta: 56.6MB). Free memory was 135.1MB in the beginning and 219.2MB in the end (delta: -84.1MB). Peak memory consumption was 40.2MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,633 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 20:53:52,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.80ms. Allocated memory was 191.9MB in the beginning and 248.5MB in the end (delta: 56.6MB). Free memory was 135.0MB in the beginning and 221.2MB in the end (delta: -86.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,634 INFO L158 Benchmark]: Boogie Preprocessor took 21.07ms. Allocated memory is still 248.5MB. Free memory was 221.2MB in the beginning and 219.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,635 INFO L158 Benchmark]: RCFGBuilder took 193.37ms. Allocated memory is still 248.5MB. Free memory was 219.7MB in the beginning and 209.8MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,635 INFO L158 Benchmark]: IcfgTransformer took 16.85ms. Allocated memory is still 248.5MB. Free memory was 209.8MB in the beginning and 208.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,635 INFO L158 Benchmark]: TraceAbstraction took 1296.90ms. Allocated memory is still 248.5MB. Free memory was 208.2MB in the beginning and 219.2MB in the end (delta: -11.1MB). Peak memory consumption was 57.0MB. Max. memory is 8.0GB. [2022-02-23 20:53:52,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 191.9MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.80ms. Allocated memory was 191.9MB in the beginning and 248.5MB in the end (delta: 56.6MB). Free memory was 135.0MB in the beginning and 221.2MB in the end (delta: -86.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.07ms. Allocated memory is still 248.5MB. Free memory was 221.2MB in the beginning and 219.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 193.37ms. Allocated memory is still 248.5MB. Free memory was 219.7MB in the beginning and 209.8MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 16.85ms. Allocated memory is still 248.5MB. Free memory was 209.8MB in the beginning and 208.6MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1296.90ms. Allocated memory is still 248.5MB. Free memory was 208.2MB in the beginning and 219.2MB in the end (delta: -11.1MB). Peak memory consumption was 57.0MB. 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: 19]: 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 22 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 16, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 17 HoareAnnotationTreeSize, 10 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 SizeOfPredicates, 1 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 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: 26]: Loop Invariant Derived loop invariant: i <= 1000000 RESULT: Ultimate proved your program to be correct! [2022-02-23 20:53:52,671 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...