/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/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 16:57:00,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 16:57:00,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 16:57:00,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 16:57:00,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 16:57:00,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 16:57:00,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 16:57:00,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 16:57:00,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 16:57:00,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 16:57:00,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 16:57:00,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 16:57:00,125 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 16:57:00,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 16:57:00,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 16:57:00,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 16:57:00,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 16:57:00,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 16:57:00,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 16:57:00,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 16:57:00,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 16:57:00,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-18 16:57:00,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 16:57:00,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 16:57:00,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 16:57:00,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 16:57:00,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 16:57:00,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 16:57:00,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 16:57:00,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 16:57:00,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 16:57:00,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 16:57:00,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 16:57:00,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 16:57:00,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 16:57:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:57:00,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 16:57:00,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 16:57:00,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 16:57:00,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 16:57:00,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 16:57:00,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 16:57:00,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 16:57:00,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 16:57:00,470 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 16:57:00,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2022-03-18 16:57:00,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52da59918/412b741a3f2e40108183fc8ee4483936/FLAGe07b17df3 [2022-03-18 16:57:00,959 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 16:57:00,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2022-03-18 16:57:00,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52da59918/412b741a3f2e40108183fc8ee4483936/FLAGe07b17df3 [2022-03-18 16:57:01,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52da59918/412b741a3f2e40108183fc8ee4483936 [2022-03-18 16:57:01,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 16:57:01,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 16:57:01,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 16:57:01,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 16:57:01,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 16:57:01,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618fd9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01, skipping insertion in model container [2022-03-18 16:57:01,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 16:57:01,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 16:57:01,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-03-18 16:57:01,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:57:01,552 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 16:57:01,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2022-03-18 16:57:01,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 16:57:01,582 INFO L208 MainTranslator]: Completed translation [2022-03-18 16:57:01,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01 WrapperNode [2022-03-18 16:57:01,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 16:57:01,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 16:57:01,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 16:57:01,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 16:57:01,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 16:57:01,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 16:57:01,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 16:57:01,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 16:57:01,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 16:57:01,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:57:01,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 16:57:01,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 16:57:01,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 16:57:01,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 16:57:01,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 16:57:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 16:57:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 16:57:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 16:57:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 16:57:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 16:57:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 16:57:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 16:57:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 16:57:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 16:57:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 16:57:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 16:57:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 16:57:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 16:57:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 16:57:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 16:57:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 16:57:01,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 16:57:01,770 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 16:57:01,772 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 16:57:01,922 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 16:57:01,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 16:57:01,928 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 16:57:01,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:57:01 BoogieIcfgContainer [2022-03-18 16:57:01,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 16:57:01,930 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 16:57:01,930 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 16:57:01,937 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 16:57:01,940 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:57:01" (1/1) ... [2022-03-18 16:57:01,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:57:01 BasicIcfg [2022-03-18 16:57:01,964 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 16:57:01,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 16:57:01,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 16:57:01,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 16:57:01,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:57:01" (1/4) ... [2022-03-18 16:57:01,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a88f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:57:01, skipping insertion in model container [2022-03-18 16:57:01,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:57:01" (2/4) ... [2022-03-18 16:57:01,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a88f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:57:01, skipping insertion in model container [2022-03-18 16:57:01,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:57:01" (3/4) ... [2022-03-18 16:57:01,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a88f23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:57:01, skipping insertion in model container [2022-03-18 16:57:01,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 04:57:01" (4/4) ... [2022-03-18 16:57:01,986 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.iJordan [2022-03-18 16:57:02,003 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-18 16:57:02,003 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 16:57:02,052 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 16:57:02,060 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 [2022-03-18 16:57:02,060 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 16:57:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 16:57:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 16:57:02,094 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:57:02,095 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:57:02,096 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:57:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:57:02,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1546198667, now seen corresponding path program 1 times [2022-03-18 16:57:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:57:02,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129548174] [2022-03-18 16:57:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:02,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:57:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:57:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:57:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:57:02,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129548174] [2022-03-18 16:57:02,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129548174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 16:57:02,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 16:57:02,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 16:57:02,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972889343] [2022-03-18 16:57:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 16:57:02,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 16:57:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:57:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 16:57:02,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-18 16:57:02,578 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 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 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:57:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:57:02,757 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-03-18 16:57:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 16:57:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 16:57:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:57:02,766 INFO L225 Difference]: With dead ends: 27 [2022-03-18 16:57:02,766 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 16:57:02,768 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-18 16:57:02,771 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 16:57:02,772 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 33 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 16:57:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 16:57:02,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-03-18 16:57:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 16:57:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-03-18 16:57:02,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2022-03-18 16:57:02,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:57:02,802 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-03-18 16:57:02,802 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 16:57:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-03-18 16:57:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 16:57:02,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:57:02,803 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:57:02,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 16:57:02,804 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:57:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:57:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash 35168483, now seen corresponding path program 1 times [2022-03-18 16:57:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:57:02,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004671343] [2022-03-18 16:57:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:57:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:57:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:03,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:57:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:57:03,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:57:03,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004671343] [2022-03-18 16:57:03,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004671343] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:57:03,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392941221] [2022-03-18 16:57:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:03,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:57:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:57:03,023 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) [2022-03-18 16:57:03,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 16:57:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:03,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-18 16:57:03,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:57:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:57:03,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:57:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 16:57:04,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392941221] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:57:04,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:57:04,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-03-18 16:57:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623415691] [2022-03-18 16:57:04,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:57:04,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-18 16:57:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:57:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-18 16:57:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-18 16:57:04,101 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 16:57:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:57:04,520 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-03-18 16:57:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:57:04,522 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2022-03-18 16:57:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:57:04,523 INFO L225 Difference]: With dead ends: 39 [2022-03-18 16:57:04,523 INFO L226 Difference]: Without dead ends: 39 [2022-03-18 16:57:04,524 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-03-18 16:57:04,525 INFO L912 BasicCegarLoop]: 14 mSDtfsCounter, 37 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:57:04,526 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 61 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:57:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-18 16:57:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-03-18 16:57:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 16:57:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-03-18 16:57:04,539 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 21 [2022-03-18 16:57:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:57:04,540 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-03-18 16:57:04,541 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 16:57:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-03-18 16:57:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 16:57:04,543 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:57:04,543 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:57:04,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 16:57:04,755 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 [2022-03-18 16:57:04,756 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:57:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:57:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash -407833038, now seen corresponding path program 1 times [2022-03-18 16:57:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:57:04,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245708247] [2022-03-18 16:57:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:57:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:57:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:57:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 16:57:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 16:57:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 16:57:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:57:04,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245708247] [2022-03-18 16:57:04,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245708247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:57:04,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673953229] [2022-03-18 16:57:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:57:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:57:04,940 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) [2022-03-18 16:57:04,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 16:57:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:04,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 16:57:04,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:57:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 16:57:05,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:57:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-18 16:57:05,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673953229] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:57:05,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:57:05,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-03-18 16:57:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251534793] [2022-03-18 16:57:05,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:57:05,234 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-18 16:57:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:57:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-18 16:57:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-18 16:57:05,235 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 16:57:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:57:05,587 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2022-03-18 16:57:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 16:57:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2022-03-18 16:57:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:57:05,589 INFO L225 Difference]: With dead ends: 59 [2022-03-18 16:57:05,589 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 16:57:05,590 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2022-03-18 16:57:05,591 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 16:57:05,591 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 16:57:05,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 16:57:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-03-18 16:57:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-18 16:57:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-03-18 16:57:05,599 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2022-03-18 16:57:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:57:05,599 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-03-18 16:57:05,600 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-03-18 16:57:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-03-18 16:57:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-18 16:57:05,602 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:57:05,602 INFO L500 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:57:05,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 16:57:05,815 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 [2022-03-18 16:57:05,816 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:57:05,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:57:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash 562981354, now seen corresponding path program 2 times [2022-03-18 16:57:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:57:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836200956] [2022-03-18 16:57:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:57:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 16:57:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 16:57:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-18 16:57:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-18 16:57:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-03-18 16:57:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-18 16:57:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-18 16:57:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-18 16:57:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-18 16:57:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 16:57:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 16:57:06,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 16:57:06,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836200956] [2022-03-18 16:57:06,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836200956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 16:57:06,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025125510] [2022-03-18 16:57:06,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 16:57:06,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 16:57:06,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 16:57:06,102 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) [2022-03-18 16:57:06,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 16:57:06,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 16:57:06,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 16:57:06,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-18 16:57:06,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 16:57:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 16:57:06,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 16:57:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-18 16:57:06,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025125510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 16:57:06,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 16:57:06,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-03-18 16:57:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602936442] [2022-03-18 16:57:06,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 16:57:06,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-18 16:57:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 16:57:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-18 16:57:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-18 16:57:06,786 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 16:57:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 16:57:07,271 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2022-03-18 16:57:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 16:57:07,272 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2022-03-18 16:57:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 16:57:07,274 INFO L225 Difference]: With dead ends: 67 [2022-03-18 16:57:07,274 INFO L226 Difference]: Without dead ends: 67 [2022-03-18 16:57:07,274 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-03-18 16:57:07,275 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 50 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 16:57:07,275 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 16:57:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-18 16:57:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2022-03-18 16:57:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-18 16:57:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2022-03-18 16:57:07,286 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 77 [2022-03-18 16:57:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 16:57:07,287 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2022-03-18 16:57:07,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-18 16:57:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2022-03-18 16:57:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-18 16:57:07,289 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 16:57:07,289 INFO L500 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 16:57:07,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 16:57:07,490 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 [2022-03-18 16:57:07,490 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 16:57:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 16:57:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1970006374, now seen corresponding path program 3 times [2022-03-18 16:57:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 16:57:07,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546695772] [2022-03-18 16:57:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 16:57:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 16:57:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 16:57:07,599 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 16:57:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 16:57:07,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 16:57:07,701 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 16:57:07,702 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 16:57:07,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-18 16:57:07,708 INFO L718 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-03-18 16:57:07,712 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 16:57:07,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:57:07 BasicIcfg [2022-03-18 16:57:07,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 16:57:07,771 INFO L158 Benchmark]: Toolchain (without parser) took 6420.40ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 124.0MB in the beginning and 152.6MB in the end (delta: -28.6MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,771 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 182.5MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 16:57:07,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.72ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 123.8MB in the beginning and 225.4MB in the end (delta: -101.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,772 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 254.8MB. Free memory was 225.4MB in the beginning and 224.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,772 INFO L158 Benchmark]: RCFGBuilder took 304.77ms. Allocated memory is still 254.8MB. Free memory was 224.4MB in the beginning and 213.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,772 INFO L158 Benchmark]: IcfgTransformer took 34.26ms. Allocated memory is still 254.8MB. Free memory was 213.4MB in the beginning and 212.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,773 INFO L158 Benchmark]: TraceAbstraction took 5804.41ms. Allocated memory is still 254.8MB. Free memory was 211.8MB in the beginning and 152.6MB in the end (delta: 59.2MB). Peak memory consumption was 60.3MB. Max. memory is 8.0GB. [2022-03-18 16:57:07,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 182.5MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.72ms. Allocated memory was 182.5MB in the beginning and 254.8MB in the end (delta: 72.4MB). Free memory was 123.8MB in the beginning and 225.4MB in the end (delta: -101.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 254.8MB. Free memory was 225.4MB in the beginning and 224.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 304.77ms. Allocated memory is still 254.8MB. Free memory was 224.4MB in the beginning and 213.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 34.26ms. Allocated memory is still 254.8MB. Free memory was 213.4MB in the beginning and 212.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5804.41ms. Allocated memory is still 254.8MB. Free memory was 211.8MB in the beginning and 152.6MB in the end (delta: 59.2MB). Peak memory consumption was 60.3MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [loop1=50, n1=51, sn=0, x=0] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=0, x=0] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=2, x=0] [L28] x++ VAL [loop1=50, n1=51, sn=2, x=1] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=2, x=1] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=2, x=1] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=4, x=1] [L28] x++ VAL [loop1=50, n1=51, sn=4, x=2] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=4, x=2] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=4, x=2] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=6, x=2] [L28] x++ VAL [loop1=50, n1=51, sn=6, x=3] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=6, x=3] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=6, x=3] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=8, x=3] [L28] x++ VAL [loop1=50, n1=51, sn=8, x=4] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=8, x=4] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=8, x=4] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=10, x=4] [L28] x++ VAL [loop1=50, n1=51, sn=10, x=5] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=10, x=5] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=10, x=5] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=12, x=5] [L28] x++ VAL [loop1=50, n1=51, sn=12, x=6] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=12, x=6] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=12, x=6] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=14, x=6] [L28] x++ VAL [loop1=50, n1=51, sn=14, x=7] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=14, x=7] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=14, x=7] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=16, x=7] [L28] x++ VAL [loop1=50, n1=51, sn=16, x=8] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=16, x=8] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=16, x=8] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=18, x=8] [L28] x++ VAL [loop1=50, n1=51, sn=18, x=9] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=18, x=9] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=18, x=9] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [loop1=50, n1=51, sn=20, x=9] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=10] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [loop1=50, n1=51, sn=20, x=10] [L24] COND TRUE 1 VAL [loop1=50, n1=51, sn=20, x=10] [L25] COND FALSE !(x<10) VAL [loop1=50, n1=51, sn=20, x=10] [L28] x++ VAL [loop1=50, n1=51, sn=20, x=11] [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) VAL [\old(cond)=0] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 893 IncrementalHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 73 mSDtfsCounter, 893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 274 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=4, InterpolantAutomatonStates: 46, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1670 SizeOfPredicates, 6 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 510/960 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-18 16:57:07,806 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...