/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/cohendiv-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 01:45:26,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 01:45:26,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 01:45:27,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 01:45:27,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 01:45:27,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 01:45:27,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 01:45:27,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 01:45:27,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 01:45:27,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 01:45:27,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 01:45:27,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 01:45:27,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 01:45:27,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 01:45:27,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 01:45:27,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 01:45:27,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 01:45:27,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 01:45:27,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 01:45:27,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 01:45:27,053 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 01:45:27,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 01:45:27,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 01:45:27,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 01:45:27,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 01:45:27,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 01:45:27,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 01:45:27,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 01:45:27,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 01:45:27,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-05 01:45:27,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 01:45:27,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 01:45:27,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 01:45:27,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 01:45:27,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-05 01:45:27,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 01:45:27,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:45:27,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 01:45:27,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 01:45:27,079 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 01:45:27,079 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 01:45:27,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 01:45:27,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 01:45:27,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 01:45:27,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 01:45:27,284 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 01:45:27,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2022-04-05 01:45:27,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c067c696d/432c6f51fd5f450fa117bc44e928256c/FLAG946b8ccb4 [2022-04-05 01:45:27,686 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 01:45:27,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2022-04-05 01:45:27,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c067c696d/432c6f51fd5f450fa117bc44e928256c/FLAG946b8ccb4 [2022-04-05 01:45:27,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c067c696d/432c6f51fd5f450fa117bc44e928256c [2022-04-05 01:45:27,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 01:45:27,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 01:45:27,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 01:45:27,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 01:45:27,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 01:45:27,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb2b44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27, skipping insertion in model container [2022-04-05 01:45:27,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 01:45:27,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 01:45:27,840 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/cohendiv-ll_valuebound1.c[576,589] [2022-04-05 01:45:27,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:45:27,858 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 01:45:27,865 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/cohendiv-ll_valuebound1.c[576,589] [2022-04-05 01:45:27,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 01:45:27,879 INFO L208 MainTranslator]: Completed translation [2022-04-05 01:45:27,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27 WrapperNode [2022-04-05 01:45:27,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 01:45:27,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 01:45:27,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 01:45:27,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 01:45:27,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 01:45:27,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 01:45:27,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 01:45:27,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 01:45:27,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (1/1) ... [2022-04-05 01:45:27,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 01:45:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:27,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 01:45:27,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 01:45:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 01:45:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 01:45:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 01:45:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 01:45:27,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 01:45:27,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 01:45:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 01:45:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 01:45:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 01:45:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 01:45:27,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 01:45:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 01:45:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 01:45:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 01:45:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 01:45:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 01:45:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 01:45:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 01:45:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 01:45:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 01:45:28,023 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 01:45:28,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 01:45:28,152 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 01:45:28,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 01:45:28,156 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 01:45:28,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:45:28 BoogieIcfgContainer [2022-04-05 01:45:28,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 01:45:28,158 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 01:45:28,158 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 01:45:28,159 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 01:45:28,161 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:45:28" (1/1) ... [2022-04-05 01:45:28,162 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-05 01:45:28,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:45:28 BasicIcfg [2022-04-05 01:45:28,174 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 01:45:28,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 01:45:28,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 01:45:28,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 01:45:28,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 01:45:27" (1/4) ... [2022-04-05 01:45:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d5116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:45:28, skipping insertion in model container [2022-04-05 01:45:28,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 01:45:27" (2/4) ... [2022-04-05 01:45:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d5116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 01:45:28, skipping insertion in model container [2022-04-05 01:45:28,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 01:45:28" (3/4) ... [2022-04-05 01:45:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d5116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:45:28, skipping insertion in model container [2022-04-05 01:45:28,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 01:45:28" (4/4) ... [2022-04-05 01:45:28,178 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.cJordan [2022-04-05 01:45:28,181 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-05 01:45:28,181 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 01:45:28,206 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 01:45:28,211 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 01:45:28,211 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 01:45:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 01:45:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 01:45:28,224 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:28,225 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:28,225 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 795680375, now seen corresponding path program 1 times [2022-04-05 01:45:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:28,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124778408] [2022-04-05 01:45:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 01:45:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 01:45:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 01:45:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 01:45:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-05 01:45:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124778408] [2022-04-05 01:45:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124778408] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:45:28,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:45:28,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 01:45:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568264197] [2022-04-05 01:45:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:45:28,433 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 01:45:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 01:45:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 01:45:28,456 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-05 01:45:28,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:28,527 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-04-05 01:45:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 01:45:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-05 01:45:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:28,534 INFO L225 Difference]: With dead ends: 39 [2022-04-05 01:45:28,535 INFO L226 Difference]: Without dead ends: 34 [2022-04-05 01:45:28,536 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 01:45:28,540 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:28,540 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 01:45:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-05 01:45:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-05 01:45:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-05 01:45:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-04-05 01:45:28,572 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 28 [2022-04-05 01:45:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:28,574 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-04-05 01:45:28,574 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-05 01:45:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-04-05 01:45:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-05 01:45:28,575 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:28,576 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:28,576 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 01:45:28,576 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash 797557208, now seen corresponding path program 1 times [2022-04-05 01:45:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227881510] [2022-04-05 01:45:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:28,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:28,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737823832] [2022-04-05 01:45:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:28,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:28,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:28,602 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 01:45:28,603 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 01:45:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:28,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 01:45:28,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-05 01:45:28,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:45:28,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:28,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227881510] [2022-04-05 01:45:28,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737823832] [2022-04-05 01:45:28,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737823832] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:45:28,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:45:28,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 01:45:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139185405] [2022-04-05 01:45:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:45:28,876 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 01:45:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 01:45:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:45:28,877 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:45:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:28,978 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-04-05 01:45:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 01:45:28,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-05 01:45:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:28,985 INFO L225 Difference]: With dead ends: 43 [2022-04-05 01:45:28,985 INFO L226 Difference]: Without dead ends: 43 [2022-04-05 01:45:28,985 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-05 01:45:28,986 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:28,986 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 169 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-04-05 01:45:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-04-05 01:45:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-04-05 01:45:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-04-05 01:45:28,991 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 28 [2022-04-05 01:45:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:28,992 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-04-05 01:45:28,992 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-05 01:45:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-04-05 01:45:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-05 01:45:28,992 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:28,992 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:29,011 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 01:45:29,203 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 01:45:29,204 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash 648866686, now seen corresponding path program 1 times [2022-04-05 01:45:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:29,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89090961] [2022-04-05 01:45:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:29,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855244206] [2022-04-05 01:45:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:29,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:29,215 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 01:45:29,216 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 01:45:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:29,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 01:45:29,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-05 01:45:29,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:45:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:29,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89090961] [2022-04-05 01:45:29,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:29,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855244206] [2022-04-05 01:45:29,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855244206] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:45:29,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:45:29,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 01:45:29,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560772711] [2022-04-05 01:45:29,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:45:29,386 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 01:45:29,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:29,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 01:45:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:45:29,387 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 01:45:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:29,497 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-04-05 01:45:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 01:45:29,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2022-04-05 01:45:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:29,498 INFO L225 Difference]: With dead ends: 55 [2022-04-05 01:45:29,498 INFO L226 Difference]: Without dead ends: 54 [2022-04-05 01:45:29,498 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-05 01:45:29,499 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:29,499 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 166 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-05 01:45:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2022-04-05 01:45:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 01:45:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2022-04-05 01:45:29,504 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 33 [2022-04-05 01:45:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:29,505 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2022-04-05 01:45:29,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-05 01:45:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2022-04-05 01:45:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-05 01:45:29,506 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:29,506 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:29,521 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 01:45:29,719 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 01:45:29,720 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:29,720 INFO L85 PathProgramCache]: Analyzing trace with hash 619469170, now seen corresponding path program 1 times [2022-04-05 01:45:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462447776] [2022-04-05 01:45:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:29,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:29,733 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:29,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393244765] [2022-04-05 01:45:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:29,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:29,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:29,734 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 01:45:29,759 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 01:45:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:29,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-05 01:45:29,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 01:45:29,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:45:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462447776] [2022-04-05 01:45:29,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393244765] [2022-04-05 01:45:29,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393244765] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:45:29,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:45:29,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-05 01:45:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716044597] [2022-04-05 01:45:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:45:29,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 01:45:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 01:45:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-05 01:45:29,996 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 01:45:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:30,115 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2022-04-05 01:45:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 01:45:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2022-04-05 01:45:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:30,117 INFO L225 Difference]: With dead ends: 77 [2022-04-05 01:45:30,117 INFO L226 Difference]: Without dead ends: 77 [2022-04-05 01:45:30,117 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-05 01:45:30,118 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 34 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:30,118 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 171 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-05 01:45:30,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2022-04-05 01:45:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 01:45:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2022-04-05 01:45:30,124 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 40 [2022-04-05 01:45:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:30,124 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2022-04-05 01:45:30,125 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-05 01:45:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2022-04-05 01:45:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 01:45:30,125 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:30,125 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:30,144 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 01:45:30,326 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 01:45:30,326 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -574143214, now seen corresponding path program 1 times [2022-04-05 01:45:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:30,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92266761] [2022-04-05 01:45:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:30,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:30,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128376567] [2022-04-05 01:45:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:30,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:30,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:30,339 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 01:45:30,340 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 01:45:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:30,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 01:45:30,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-05 01:45:30,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 01:45:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:30,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92266761] [2022-04-05 01:45:30,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:30,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128376567] [2022-04-05 01:45:30,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128376567] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 01:45:30,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 01:45:30,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-05 01:45:30,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551938126] [2022-04-05 01:45:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 01:45:30,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-05 01:45:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:30,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-05 01:45:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-04-05 01:45:30,468 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 01:45:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:30,536 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-04-05 01:45:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 01:45:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-04-05 01:45:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:30,538 INFO L225 Difference]: With dead ends: 74 [2022-04-05 01:45:30,538 INFO L226 Difference]: Without dead ends: 74 [2022-04-05 01:45:30,538 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-05 01:45:30,539 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:30,539 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 160 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-05 01:45:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-05 01:45:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.146341463414634) internal successors, (47), 43 states have internal predecessors, (47), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-05 01:45:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2022-04-05 01:45:30,544 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 95 transitions. Word has length 50 [2022-04-05 01:45:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:30,544 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 95 transitions. [2022-04-05 01:45:30,545 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 01:45:30,545 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 95 transitions. [2022-04-05 01:45:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-05 01:45:30,545 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:30,545 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:30,563 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 01:45:30,746 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 01:45:30,746 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:30,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -810208713, now seen corresponding path program 1 times [2022-04-05 01:45:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:30,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400005306] [2022-04-05 01:45:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:30,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:30,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245009551] [2022-04-05 01:45:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:30,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:30,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:30,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 01:45:30,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 01:45:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-05 01:45:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-04-05 01:45:30,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:45:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-04-05 01:45:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:31,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400005306] [2022-04-05 01:45:31,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:31,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245009551] [2022-04-05 01:45:31,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245009551] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:45:31,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:45:31,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-04-05 01:45:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206833413] [2022-04-05 01:45:31,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:45:31,202 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 01:45:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 01:45:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-05 01:45:31,203 INFO L87 Difference]: Start difference. First operand 74 states and 95 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-04-05 01:45:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:31,326 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-04-05 01:45:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-05 01:45:31,326 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 56 [2022-04-05 01:45:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:31,327 INFO L225 Difference]: With dead ends: 57 [2022-04-05 01:45:31,327 INFO L226 Difference]: Without dead ends: 57 [2022-04-05 01:45:31,328 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-04-05 01:45:31,329 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:31,329 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 130 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-05 01:45:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2022-04-05 01:45:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.0625) internal successors, (34), 34 states have internal predecessors, (34), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-05 01:45:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-04-05 01:45:31,339 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 56 [2022-04-05 01:45:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:31,339 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-04-05 01:45:31,339 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2022-04-05 01:45:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-04-05 01:45:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-05 01:45:31,342 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 01:45:31,342 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:31,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 01:45:31,551 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:31,551 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 01:45:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 01:45:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1603019557, now seen corresponding path program 1 times [2022-04-05 01:45:31,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 01:45:31,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732940990] [2022-04-05 01:45:31,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 01:45:31,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 01:45:31,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080488556] [2022-04-05 01:45:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 01:45:31,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:31,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 01:45:31,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 01:45:31,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 01:45:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 01:45:31,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-05 01:45:31,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 01:45:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-04-05 01:45:31,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 01:45:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-04-05 01:45:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 01:45:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732940990] [2022-04-05 01:45:32,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 01:45:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080488556] [2022-04-05 01:45:32,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080488556] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 01:45:32,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 01:45:32,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-04-05 01:45:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86498787] [2022-04-05 01:45:32,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 01:45:32,192 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-05 01:45:32,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 01:45:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-05 01:45:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-04-05 01:45:32,193 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2022-04-05 01:45:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 01:45:32,367 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-04-05 01:45:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 01:45:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 63 [2022-04-05 01:45:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 01:45:32,368 INFO L225 Difference]: With dead ends: 50 [2022-04-05 01:45:32,368 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 01:45:32,368 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-04-05 01:45:32,369 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 01:45:32,369 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 137 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 01:45:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 01:45:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 01:45:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 01:45:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 01:45:32,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-04-05 01:45:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 01:45:32,370 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 01:45:32,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 14 states have internal predecessors, (32), 9 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2022-04-05 01:45:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 01:45:32,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 01:45:32,372 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 01:45:32,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 01:45:32,579 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 01:45:32,582 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-05 01:45:32,582 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 01:45:32,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 01:45:32 BasicIcfg [2022-04-05 01:45:32,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 01:45:32,584 INFO L158 Benchmark]: Toolchain (without parser) took 4880.71ms. Allocated memory was 182.5MB in the beginning and 261.1MB in the end (delta: 78.6MB). Free memory was 129.4MB in the beginning and 124.5MB in the end (delta: 4.8MB). Peak memory consumption was 84.5MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.06ms. Allocated memory is still 182.5MB. Free memory was 129.1MB in the beginning and 157.6MB in the end (delta: -28.5MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: Boogie Preprocessor took 34.60ms. Allocated memory is still 182.5MB. Free memory was 157.6MB in the beginning and 156.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: RCFGBuilder took 242.32ms. Allocated memory is still 182.5MB. Free memory was 155.7MB in the beginning and 145.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: IcfgTransformer took 15.64ms. Allocated memory is still 182.5MB. Free memory was 145.6MB in the beginning and 144.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,585 INFO L158 Benchmark]: TraceAbstraction took 4409.58ms. Allocated memory was 182.5MB in the beginning and 261.1MB in the end (delta: 78.6MB). Free memory was 143.5MB in the beginning and 124.5MB in the end (delta: 19.0MB). Peak memory consumption was 98.1MB. Max. memory is 8.0GB. [2022-04-05 01:45:32,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 174.06ms. Allocated memory is still 182.5MB. Free memory was 129.1MB in the beginning and 157.6MB in the end (delta: -28.5MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.60ms. Allocated memory is still 182.5MB. Free memory was 157.6MB in the beginning and 156.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 242.32ms. Allocated memory is still 182.5MB. Free memory was 155.7MB in the beginning and 145.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 15.64ms. Allocated memory is still 182.5MB. Free memory was 145.6MB in the beginning and 144.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4409.58ms. Allocated memory was 182.5MB in the beginning and 261.1MB in the end (delta: 78.6MB). Free memory was 143.5MB in the beginning and 124.5MB in the end (delta: 19.0MB). Peak memory consumption was 98.1MB. 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: 17]: 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 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 974 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 726 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 886 IncrementalHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 248 mSDtfsCounter, 886 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1398 SizeOfPredicates, 26 NumberOfNonLiveVariables, 745 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 382/400 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-05 01:45:32,610 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...