/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-7390193 [2022-04-05 05:29:23,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 05:29:23,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 05:29:23,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 05:29:23,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 05:29:23,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 05:29:23,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 05:29:23,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 05:29:23,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 05:29:23,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 05:29:23,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 05:29:23,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 05:29:23,124 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 05:29:23,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 05:29:23,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 05:29:23,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 05:29:23,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 05:29:23,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 05:29:23,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 05:29:23,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 05:29:23,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 05:29:23,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 05:29:23,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 05:29:23,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 05:29:23,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 05:29:23,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 05:29:23,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 05:29:23,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 05:29:23,171 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 05:29:23,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 05:29:23,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 05:29:23,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 05:29:23,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 05:29:23,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 05:29:23,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 05:29:23,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 05:29:23,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:29:23,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 05:29:23,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 05:29:23,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 05:29:23,175 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 05:29:23,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 05:29:23,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 05:29:23,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 05:29:23,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 05:29:23,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 05:29:23,430 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 05:29:23,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-04-05 05:29:23,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff32e1/22fd06897e734dbcafd2f578d9beb58c/FLAG33cd2ce58 [2022-04-05 05:29:23,836 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 05:29:23,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-04-05 05:29:23,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff32e1/22fd06897e734dbcafd2f578d9beb58c/FLAG33cd2ce58 [2022-04-05 05:29:24,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff32e1/22fd06897e734dbcafd2f578d9beb58c [2022-04-05 05:29:24,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 05:29:24,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 05:29:24,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 05:29:24,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 05:29:24,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 05:29:24,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4a4f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24, skipping insertion in model container [2022-04-05 05:29:24,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 05:29:24,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 05:29:24,431 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] [2022-04-05 05:29:24,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:29:24,452 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 05:29:24,462 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] [2022-04-05 05:29:24,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 05:29:24,474 INFO L208 MainTranslator]: Completed translation [2022-04-05 05:29:24,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24 WrapperNode [2022-04-05 05:29:24,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 05:29:24,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 05:29:24,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 05:29:24,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 05:29:24,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 05:29:24,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 05:29:24,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 05:29:24,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 05:29:24,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 05:29:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:24,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 05:29:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 05:29:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 05:29:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 05:29:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 05:29:24,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 05:29:24,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 05:29:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 05:29:24,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 05:29:24,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 05:29:24,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 05:29:24,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 05:29:24,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 05:29:24,659 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 05:29:24,660 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 05:29:24,758 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 05:29:24,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 05:29:24,766 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 05:29:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:29:24 BoogieIcfgContainer [2022-04-05 05:29:24,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 05:29:24,775 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 05:29:24,775 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 05:29:24,791 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 05:29:24,794 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:29:24" (1/1) ... [2022-04-05 05:29:24,796 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 05:29:24,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:29:24 BasicIcfg [2022-04-05 05:29:24,819 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 05:29:24,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 05:29:24,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 05:29:24,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 05:29:24,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 05:29:24" (1/4) ... [2022-04-05 05:29:24,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7635fdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:29:24, skipping insertion in model container [2022-04-05 05:29:24,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:29:24" (2/4) ... [2022-04-05 05:29:24,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7635fdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:29:24, skipping insertion in model container [2022-04-05 05:29:24,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:29:24" (3/4) ... [2022-04-05 05:29:24,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7635fdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 05:29:24, skipping insertion in model container [2022-04-05 05:29:24,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 05:29:24" (4/4) ... [2022-04-05 05:29:24,826 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.iqvasr [2022-04-05 05:29:24,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 05:29:24,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 05:29:24,874 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 05:29:24,880 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 [2022-04-05 05:29:24,880 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 05:29:24,896 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) [2022-04-05 05:29:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 05:29:24,900 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:24,900 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:24,901 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1861424559, now seen corresponding path program 1 times [2022-04-05 05:29:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:24,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207090849] [2022-04-05 05:29:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:29:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:25,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207090849] [2022-04-05 05:29:25,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207090849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 05:29:25,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 05:29:25,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 05:29:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942108693] [2022-04-05 05:29:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 05:29:25,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 05:29:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 05:29:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 05:29:25,161 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) [2022-04-05 05:29:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:25,306 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-04-05 05:29:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 05:29:25,308 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 [2022-04-05 05:29:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:25,312 INFO L225 Difference]: With dead ends: 41 [2022-04-05 05:29:25,312 INFO L226 Difference]: Without dead ends: 22 [2022-04-05 05:29:25,314 INFO L912 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 [2022-04-05 05:29:25,317 INFO L913 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 [2022-04-05 05:29:25,318 INFO L914 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] [2022-04-05 05:29:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-05 05:29:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-04-05 05:29:25,345 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) [2022-04-05 05:29:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-04-05 05:29:25,347 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2022-04-05 05:29:25,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:25,347 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-04-05 05:29:25,347 INFO L479 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) [2022-04-05 05:29:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-04-05 05:29:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-05 05:29:25,348 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 05:29:25,348 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 05:29:25,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 05:29:25,349 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 05:29:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 05:29:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1022018108, now seen corresponding path program 1 times [2022-04-05 05:29:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 05:29:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537861246] [2022-04-05 05:29:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 05:29:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 05:29:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-05 05:29:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:29:25,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 05:29:25,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537861246] [2022-04-05 05:29:25,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537861246] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 05:29:25,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416243945] [2022-04-05 05:29:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 05:29:25,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:25,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 05:29:25,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 05:29:25,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 05:29:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 05:29:25,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 05:29:25,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 05:29:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:29:25,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 05:29:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 05:29:25,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416243945] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 05:29:25,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-05 05:29:25,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-04-05 05:29:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191664039] [2022-04-05 05:29:25,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-05 05:29:25,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 05:29:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 05:29:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 05:29:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-04-05 05:29:25,668 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) [2022-04-05 05:29:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 05:29:25,763 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-04-05 05:29:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 05:29:25,763 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 [2022-04-05 05:29:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 05:29:25,764 INFO L225 Difference]: With dead ends: 26 [2022-04-05 05:29:25,764 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 05:29:25,765 INFO L912 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 [2022-04-05 05:29:25,766 INFO L913 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 [2022-04-05 05:29:25,767 INFO L914 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] [2022-04-05 05:29:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 05:29:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 05:29:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 05:29:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 05:29:25,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-04-05 05:29:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 05:29:25,768 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 05:29:25,769 INFO L479 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) [2022-04-05 05:29:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 05:29:25,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 05:29:25,771 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 05:29:25,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 05:29:25,995 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 05:29:25,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-05 05:29:26,025 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-05 05:29:26,025 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-05 05:29:26,025 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-05 05:29:26,026 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-05 05:29:26,026 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-05 05:29:26,026 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-05 05:29:26,026 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-05 05:29:26,026 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2022-04-05 05:29:26,026 INFO L878 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-04-05 05:29:26,027 INFO L882 garLoopResultBuilder]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2022-04-05 05:29:26,027 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (<= main_~i~0 999999) [2022-04-05 05:29:26,027 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 30) no Hoare annotation was computed. [2022-04-05 05:29:26,027 INFO L882 garLoopResultBuilder]: For program point L27-1(lines 26 28) no Hoare annotation was computed. [2022-04-05 05:29:26,027 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 30) no Hoare annotation was computed. [2022-04-05 05:29:26,027 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-04-05 05:29:26,028 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-04-05 05:29:26,028 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-04-05 05:29:26,028 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-04-05 05:29:26,028 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-04-05 05:29:26,028 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-04-05 05:29:26,031 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-05 05:29:26,032 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 05:29:26,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 05:29:26 BasicIcfg [2022-04-05 05:29:26,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 05:29:26,043 INFO L158 Benchmark]: Toolchain (without parser) took 1786.53ms. Allocated memory was 179.3MB in the beginning and 253.8MB in the end (delta: 74.4MB). Free memory was 120.4MB in the beginning and 155.6MB in the end (delta: -35.2MB). Peak memory consumption was 38.6MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,043 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 05:29:26,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.43ms. Allocated memory was 179.3MB in the beginning and 253.8MB in the end (delta: 74.4MB). Free memory was 120.3MB in the beginning and 225.3MB in the end (delta: -105.0MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,044 INFO L158 Benchmark]: Boogie Preprocessor took 35.01ms. Allocated memory is still 253.8MB. Free memory was 225.3MB in the beginning and 223.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,045 INFO L158 Benchmark]: RCFGBuilder took 258.49ms. Allocated memory is still 253.8MB. Free memory was 223.6MB in the beginning and 212.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,045 INFO L158 Benchmark]: IcfgTransformer took 44.28ms. Allocated memory is still 253.8MB. Free memory was 212.8MB in the beginning and 211.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,046 INFO L158 Benchmark]: TraceAbstraction took 1221.61ms. Allocated memory is still 253.8MB. Free memory was 211.2MB in the beginning and 155.6MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. Max. memory is 8.0GB. [2022-04-05 05:29:26,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.43ms. Allocated memory was 179.3MB in the beginning and 253.8MB in the end (delta: 74.4MB). Free memory was 120.3MB in the beginning and 225.3MB in the end (delta: -105.0MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.01ms. Allocated memory is still 253.8MB. Free memory was 225.3MB in the beginning and 223.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 258.49ms. Allocated memory is still 253.8MB. Free memory was 223.6MB in the beginning and 212.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 44.28ms. Allocated memory is still 253.8MB. Free memory was 212.8MB in the beginning and 211.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1221.61ms. Allocated memory is still 253.8MB. Free memory was 211.2MB in the beginning and 155.6MB in the end (delta: 55.6MB). Peak memory consumption was 55.6MB. 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: 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! [2022-04-05 05:29:26,083 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...