/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/nla-digbench-scaling/ps3-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 03:48:15,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 03:48:15,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 03:48:15,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 03:48:15,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 03:48:15,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 03:48:15,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 03:48:15,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 03:48:15,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 03:48:15,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 03:48:15,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 03:48:15,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 03:48:15,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 03:48:15,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 03:48:15,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 03:48:15,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 03:48:15,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 03:48:15,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 03:48:15,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 03:48:15,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 03:48:15,261 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 03:48:15,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 03:48:15,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 03:48:15,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 03:48:15,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 03:48:15,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 03:48:15,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 03:48:15,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 03:48:15,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 03:48:15,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 03:48:15,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 03:48:15,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 03:48:15,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 03:48:15,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 03:48:15,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 03:48:15,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 03:48:15,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 03:48:15,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 03:48:15,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 03:48:15,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 03:48:15,299 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 03:48:15,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 03:48:15,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 03:48:15,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 03:48:15,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 03:48:15,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 03:48:15,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 03:48:15,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 03:48:15,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:48:15,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 03:48:15,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 03:48:15,301 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 03:48:15,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 03:48:15,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 03:48:15,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 03:48:15,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 03:48:15,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 03:48:15,526 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 03:48:15,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound50.c [2022-04-05 03:48:15,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d545a013/140b0954ae3b467791cfa12073b196b8/FLAG862b3f855 [2022-04-05 03:48:15,924 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 03:48:15,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound50.c [2022-04-05 03:48:15,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d545a013/140b0954ae3b467791cfa12073b196b8/FLAG862b3f855 [2022-04-05 03:48:15,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d545a013/140b0954ae3b467791cfa12073b196b8 [2022-04-05 03:48:15,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 03:48:15,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 03:48:15,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 03:48:15,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 03:48:15,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 03:48:15,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:48:15" (1/1) ... [2022-04-05 03:48:15,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6331f624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:15, skipping insertion in model container [2022-04-05 03:48:15,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 03:48:15" (1/1) ... [2022-04-05 03:48:15,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 03:48:15,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 03:48:16,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound50.c[458,471] [2022-04-05 03:48:16,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:48:16,135 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 03:48:16,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound50.c[458,471] [2022-04-05 03:48:16,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 03:48:16,160 INFO L208 MainTranslator]: Completed translation [2022-04-05 03:48:16,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16 WrapperNode [2022-04-05 03:48:16,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 03:48:16,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 03:48:16,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 03:48:16,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 03:48:16,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 03:48:16,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 03:48:16,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 03:48:16,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 03:48:16,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 03:48:16,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:48:16,215 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 03:48:16,231 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 03:48:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 03:48:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 03:48:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 03:48:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 03:48:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 03:48:16,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-05 03:48:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 03:48:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 03:48:16,298 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 03:48:16,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 03:48:16,380 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 03:48:16,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 03:48:16,384 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 03:48:16,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:48:16 BoogieIcfgContainer [2022-04-05 03:48:16,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 03:48:16,386 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 03:48:16,387 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 03:48:16,387 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 03:48:16,390 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:48:16" (1/1) ... [2022-04-05 03:48:16,403 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 03:48:16,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:48:16 BasicIcfg [2022-04-05 03:48:16,427 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 03:48:16,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 03:48:16,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 03:48:16,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 03:48:16,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 03:48:15" (1/4) ... [2022-04-05 03:48:16,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365c0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:48:16, skipping insertion in model container [2022-04-05 03:48:16,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 03:48:16" (2/4) ... [2022-04-05 03:48:16,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365c0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 03:48:16, skipping insertion in model container [2022-04-05 03:48:16,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 03:48:16" (3/4) ... [2022-04-05 03:48:16,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365c0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:48:16, skipping insertion in model container [2022-04-05 03:48:16,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 03:48:16" (4/4) ... [2022-04-05 03:48:16,442 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound50.cJordan [2022-04-05 03:48:16,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 03:48:16,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 03:48:16,501 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 03:48:16,506 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 03:48:16,507 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 03:48:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-05 03:48:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-05 03:48:16,524 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:48:16,524 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:48:16,525 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:48:16,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:48:16,529 INFO L85 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2022-04-05 03:48:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:48:16,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478694424] [2022-04-05 03:48:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:48:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:16,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 03:48:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:16,727 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 03:48:16,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:48:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478694424] [2022-04-05 03:48:16,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478694424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:48:16,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:48:16,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 03:48:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029929330] [2022-04-05 03:48:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:48:16,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 03:48:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:48:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 03:48:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 03:48:16,759 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 03:48:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:48:16,815 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-05 03:48:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 03:48:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 03:48:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:48:16,827 INFO L225 Difference]: With dead ends: 23 [2022-04-05 03:48:16,827 INFO L226 Difference]: Without dead ends: 18 [2022-04-05 03:48:16,828 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 03:48:16,837 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:48:16,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:48:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-05 03:48:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-05 03:48:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:48:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-05 03:48:16,868 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-05 03:48:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:48:16,869 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-05 03:48:16,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 03:48:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-05 03:48:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-05 03:48:16,870 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:48:16,870 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:48:16,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 03:48:16,871 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:48:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:48:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2022-04-05 03:48:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:48:16,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676371369] [2022-04-05 03:48:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:48:16,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:48:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725663416] [2022-04-05 03:48:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:16,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:48:16,907 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 03:48:16,914 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 03:48:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:16,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 03:48:16,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:48:17,063 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 03:48:17,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:48:17,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:48:17,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676371369] [2022-04-05 03:48:17,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:48:17,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725663416] [2022-04-05 03:48:17,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725663416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:48:17,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:48:17,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 03:48:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673675819] [2022-04-05 03:48:17,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:48:17,069 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 03:48:17,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:48:17,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 03:48:17,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 03:48:17,070 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 03:48:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:48:17,084 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-05 03:48:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 03:48:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 12 [2022-04-05 03:48:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:48:17,086 INFO L225 Difference]: With dead ends: 19 [2022-04-05 03:48:17,086 INFO L226 Difference]: Without dead ends: 19 [2022-04-05 03:48:17,086 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 03:48:17,087 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:48:17,087 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:48:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-05 03:48:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-05 03:48:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:48:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-05 03:48:17,091 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-05 03:48:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:48:17,092 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-05 03:48:17,092 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 03:48:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-05 03:48:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-05 03:48:17,092 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:48:17,092 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:48:17,114 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 03:48:17,299 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 03:48:17,300 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:48:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:48:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2022-04-05 03:48:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:48:17,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816306844] [2022-04-05 03:48:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:48:17,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:48:17,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035960418] [2022-04-05 03:48:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:48:17,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:48:17,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 03:48:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:17,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 03:48:17,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:48:17,414 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 03:48:17,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 03:48:17,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:48:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816306844] [2022-04-05 03:48:17,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:48:17,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035960418] [2022-04-05 03:48:17,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035960418] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 03:48:17,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 03:48:17,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 03:48:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209995245] [2022-04-05 03:48:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:48:17,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:48:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:48:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:48:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 03:48:17,417 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 03:48:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:48:17,457 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-05 03:48:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:48:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 03:48:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:48:17,459 INFO L225 Difference]: With dead ends: 26 [2022-04-05 03:48:17,460 INFO L226 Difference]: Without dead ends: 25 [2022-04-05 03:48:17,460 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-05 03:48:17,463 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:48:17,465 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:48:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-05 03:48:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-05 03:48:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-05 03:48:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-05 03:48:17,473 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-05 03:48:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:48:17,473 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-05 03:48:17,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 03:48:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-05 03:48:17,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 03:48:17,474 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:48:17,474 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:48:17,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 03:48:17,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 03:48:17,675 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:48:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:48:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2022-04-05 03:48:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:48:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187725924] [2022-04-05 03:48:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:48:17,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:48:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881285235] [2022-04-05 03:48:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:17,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:17,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:48:17,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:48:17,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 03:48:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:17,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 03:48:17,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:48:17,817 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 03:48:17,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:48:17,883 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 03:48:17,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:48:17,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187725924] [2022-04-05 03:48:17,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:48:17,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881285235] [2022-04-05 03:48:17,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881285235] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 03:48:17,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 03:48:17,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-05 03:48:17,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152993729] [2022-04-05 03:48:17,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 03:48:17,885 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 03:48:17,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:48:17,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 03:48:17,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-05 03:48:17,886 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 03:48:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:48:17,937 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-05 03:48:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 03:48:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-05 03:48:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:48:17,939 INFO L225 Difference]: With dead ends: 49 [2022-04-05 03:48:17,939 INFO L226 Difference]: Without dead ends: 49 [2022-04-05 03:48:17,939 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-05 03:48:17,940 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:48:17,940 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 75 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:48:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-05 03:48:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-04-05 03:48:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-05 03:48:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-04-05 03:48:17,946 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-04-05 03:48:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:48:17,947 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-04-05 03:48:17,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-05 03:48:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-04-05 03:48:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 03:48:17,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 03:48:17,948 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 03:48:17,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 03:48:18,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:18,171 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 03:48:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 03:48:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2022-04-05 03:48:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 03:48:18,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127197007] [2022-04-05 03:48:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 03:48:18,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 03:48:18,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485389130] [2022-04-05 03:48:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 03:48:18,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 03:48:18,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 03:48:18,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 03:48:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 03:48:18,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-05 03:48:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 03:48:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 03:48:18,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 03:48:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 03:48:18,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 03:48:18,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127197007] [2022-04-05 03:48:18,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 03:48:18,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485389130] [2022-04-05 03:48:18,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485389130] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 03:48:18,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 03:48:18,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-05 03:48:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894946095] [2022-04-05 03:48:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 03:48:18,473 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 03:48:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 03:48:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 03:48:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 03:48:18,474 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:48:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 03:48:18,498 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-04-05 03:48:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 03:48:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-05 03:48:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 03:48:18,499 INFO L225 Difference]: With dead ends: 43 [2022-04-05 03:48:18,499 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 03:48:18,500 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-05 03:48:18,500 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 03:48:18,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 03:48:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 03:48:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 03:48:18,501 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 03:48:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 03:48:18,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-05 03:48:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 03:48:18,502 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 03:48:18,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 03:48:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 03:48:18,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 03:48:18,505 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 03:48:18,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 03:48:18,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 03:48:18,730 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-05 03:48:18,731 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 03:48:18,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 03:48:18 BasicIcfg [2022-04-05 03:48:18,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 03:48:18,733 INFO L158 Benchmark]: Toolchain (without parser) took 2783.28ms. Allocated memory is still 177.2MB. Free memory was 128.7MB in the beginning and 115.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,734 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 145.3MB in the beginning and 145.2MB in the end (delta: 79.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 03:48:18,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.03ms. Allocated memory is still 177.2MB. Free memory was 128.5MB in the beginning and 156.2MB in the end (delta: -27.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,734 INFO L158 Benchmark]: Boogie Preprocessor took 24.18ms. Allocated memory is still 177.2MB. Free memory was 156.2MB in the beginning and 154.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,734 INFO L158 Benchmark]: RCFGBuilder took 199.18ms. Allocated memory is still 177.2MB. Free memory was 154.7MB in the beginning and 144.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,735 INFO L158 Benchmark]: IcfgTransformer took 41.00ms. Allocated memory is still 177.2MB. Free memory was 144.7MB in the beginning and 143.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,735 INFO L158 Benchmark]: TraceAbstraction took 2304.21ms. Allocated memory is still 177.2MB. Free memory was 143.2MB in the beginning and 115.4MB in the end (delta: 27.7MB). Peak memory consumption was 28.5MB. Max. memory is 8.0GB. [2022-04-05 03:48:18,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 145.3MB in the beginning and 145.2MB in the end (delta: 79.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.03ms. Allocated memory is still 177.2MB. Free memory was 128.5MB in the beginning and 156.2MB in the end (delta: -27.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.18ms. Allocated memory is still 177.2MB. Free memory was 156.2MB in the beginning and 154.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 199.18ms. Allocated memory is still 177.2MB. Free memory was 154.7MB in the beginning and 144.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 41.00ms. Allocated memory is still 177.2MB. Free memory was 144.7MB in the beginning and 143.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2304.21ms. Allocated memory is still 177.2MB. Free memory was 143.2MB in the beginning and 115.4MB in the end (delta: 27.7MB). Peak memory consumption was 28.5MB. 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: 12]: 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, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 5, 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, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 89 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 5 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 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 03:48:18,755 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...