/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark14_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 01:20:17,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 01:20:17,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 01:20:17,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 01:20:17,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 01:20:17,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 01:20:17,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 01:20:17,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 01:20:17,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 01:20:17,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 01:20:17,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 01:20:17,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 01:20:17,121 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 01:20:17,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 01:20:17,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 01:20:17,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 01:20:17,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 01:20:17,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 01:20:17,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 01:20:17,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 01:20:17,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 01:20:17,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 01:20:17,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 01:20:17,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 01:20:17,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 01:20:17,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 01:20:17,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 01:20:17,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 01:20:17,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 01:20:17,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 01:20:17,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 01:20:17,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:20:17,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 01:20:17,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 01:20:17,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 01:20:17,141 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 01:20:17,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 01:20:17,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 01:20:17,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 01:20:17,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 01:20:17,317 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 01:20:17,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark14_linear.i [2022-04-05 01:20:17,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94accc12e/b794b7fb0840499497ee42ad9b5a93e6/FLAG1bb696ed4 [2022-04-05 01:20:17,725 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 01:20:17,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i [2022-04-05 01:20:17,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94accc12e/b794b7fb0840499497ee42ad9b5a93e6/FLAG1bb696ed4 [2022-04-05 01:20:17,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94accc12e/b794b7fb0840499497ee42ad9b5a93e6 [2022-04-05 01:20:17,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 01:20:17,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 01:20:17,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 01:20:17,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 01:20:17,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 01:20:17,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2285c486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17, skipping insertion in model container [2022-04-05 01:20:17,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 01:20:17,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 01:20:17,883 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i[868,881] [2022-04-05 01:20:17,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:20:17,903 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 01:20:17,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i[868,881] [2022-04-05 01:20:17,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:20:17,921 INFO L208 MainTranslator]: Completed translation [2022-04-05 01:20:17,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17 WrapperNode [2022-04-05 01:20:17,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 01:20:17,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 01:20:17,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 01:20:17,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 01:20:17,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 01:20:17,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 01:20:17,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 01:20:17,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 01:20:17,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (1/1) ... [2022-04-05 01:20:17,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:20:17,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:20:18,016 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 01:20:18,074 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 01:20:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 01:20:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 01:20:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 01:20:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 01:20:18,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 01:20:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-05 01:20:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 01:20:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 01:20:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 01:20:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 01:20:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 01:20:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 01:20:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 01:20:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 01:20:18,139 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 01:20:18,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 01:20:18,221 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 01:20:18,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 01:20:18,225 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 01:20:18,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:20:18 BoogieIcfgContainer [2022-04-05 01:20:18,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 01:20:18,227 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 01:20:18,227 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 01:20:18,232 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 01:20:18,236 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:20:18" (1/1) ... [2022-04-05 01:20:18,237 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 01:20:18,324 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-05 01:20:18,324 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~i~0_3 (+ v_main_~i~0_2 1)) (< 0 v_main_~i~0_3)) InVars {main_~i~0=v_main_~i~0_3} OutVars{main_~i~0=v_main_~i~0_2, main_#t~post2=|v_main_#t~post2_1|} AuxVars[] AssignedVars[main_~i~0, main_#t~post2] to Formula: (or (and (<= v_main_~i~0_3 0) (= |v_main_#t~post2_3| |v_main_#t~post2_1|) (= v_main_~i~0_3 v_main_~i~0_2)) (and (< v_main_~i~0_2 v_main_~i~0_3) (< 0 (+ v_main_~i~0_2 1)))) InVars {main_~i~0=v_main_~i~0_3, main_#t~post2=|v_main_#t~post2_3|} OutVars{main_~i~0=v_main_~i~0_2, main_#t~post2=|v_main_#t~post2_1|} AuxVars[] AssignedVars[main_~i~0, main_#t~post2] [2022-04-05 01:20:18,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:20:18 BasicIcfg [2022-04-05 01:20:18,333 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 01:20:18,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 01:20:18,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 01:20:18,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 01:20:18,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 01:20:17" (1/4) ... [2022-04-05 01:20:18,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368b07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:20:18, skipping insertion in model container [2022-04-05 01:20:18,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:20:17" (2/4) ... [2022-04-05 01:20:18,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368b07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:20:18, skipping insertion in model container [2022-04-05 01:20:18,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:20:18" (3/4) ... [2022-04-05 01:20:18,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368b07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:20:18, skipping insertion in model container [2022-04-05 01:20:18,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:20:18" (4/4) ... [2022-04-05 01:20:18,338 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark14_linear.iJordan [2022-04-05 01:20:18,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 01:20:18,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 01:20:18,386 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 01:20:18,395 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 01:20:18,395 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 01:20:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 01:20:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-05 01:20:18,409 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:20:18,409 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:20:18,409 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:20:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:20:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-04-05 01:20:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:20:18,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943184308] [2022-04-05 01:20:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:20:18,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:20:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:20:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 01:20:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:20:18,564 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 01:20:18,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:20:18,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943184308] [2022-04-05 01:20:18,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943184308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:20:18,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:20:18,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 01:20:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306839632] [2022-04-05 01:20:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:20:18,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 01:20:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:20:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 01:20:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 01:20:18,591 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:20:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:20:18,618 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-04-05 01:20:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 01:20:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-05 01:20:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:20:18,632 INFO L225 Difference]: With dead ends: 20 [2022-04-05 01:20:18,633 INFO L226 Difference]: Without dead ends: 13 [2022-04-05 01:20:18,634 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 01:20:18,637 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:20:18,638 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:20:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-05 01:20:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-05 01:20:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:20:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-05 01:20:18,658 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-04-05 01:20:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:20:18,658 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-05 01:20:18,658 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:20:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-05 01:20:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-05 01:20:18,659 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:20:18,659 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:20:18,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 01:20:18,659 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:20:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:20:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-04-05 01:20:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:20:18,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620732128] [2022-04-05 01:20:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:20:18,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:20:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:20:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 01:20:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:20:18,766 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 01:20:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:20:18,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620732128] [2022-04-05 01:20:18,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620732128] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:20:18,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:20:18,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-05 01:20:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687196531] [2022-04-05 01:20:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:20:18,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 01:20:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:20:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 01:20:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-05 01:20:18,768 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:20:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:20:18,816 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-04-05 01:20:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 01:20:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-05 01:20:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:20:18,816 INFO L225 Difference]: With dead ends: 11 [2022-04-05 01:20:18,816 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 01:20:18,819 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:20:18,820 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:20:18,821 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:20:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 01:20:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 01:20:18,823 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 01:20:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 01:20:18,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-05 01:20:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:20:18,826 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 01:20:18,826 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 01:20:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 01:20:18,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 01:20:18,828 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 01:20:18,829 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 01:20:18,830 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-05 01:20:18,831 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 01:20:18,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:20:18 BasicIcfg [2022-04-05 01:20:18,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 01:20:18,833 INFO L158 Benchmark]: Toolchain (without parser) took 1091.83ms. Allocated memory is still 182.5MB. Free memory was 124.8MB in the beginning and 110.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,833 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 141.6MB in the end (delta: 75.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 01:20:18,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.34ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 156.5MB in the end (delta: -32.0MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,838 INFO L158 Benchmark]: Boogie Preprocessor took 32.10ms. Allocated memory is still 182.5MB. Free memory was 156.5MB in the beginning and 155.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,841 INFO L158 Benchmark]: RCFGBuilder took 272.12ms. Allocated memory is still 182.5MB. Free memory was 155.1MB in the beginning and 145.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,842 INFO L158 Benchmark]: IcfgTransformer took 105.99ms. Allocated memory is still 182.5MB. Free memory was 145.5MB in the beginning and 139.1MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,842 INFO L158 Benchmark]: TraceAbstraction took 498.54ms. Allocated memory is still 182.5MB. Free memory was 138.6MB in the beginning and 110.5MB in the end (delta: 28.1MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-04-05 01:20:18,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 182.5MB. Free memory was 141.6MB in the beginning and 141.6MB in the end (delta: 75.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.34ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 156.5MB in the end (delta: -32.0MB). Peak memory consumption was 7.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.10ms. Allocated memory is still 182.5MB. Free memory was 156.5MB in the beginning and 155.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 272.12ms. Allocated memory is still 182.5MB. Free memory was 155.1MB in the beginning and 145.5MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 105.99ms. Allocated memory is still 182.5MB. Free memory was 145.5MB in the beginning and 139.1MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 498.54ms. Allocated memory is still 182.5MB. Free memory was 138.6MB in the beginning and 110.5MB in the end (delta: 28.1MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 28 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2022-04-05 01:20:18,886 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...