/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/bresenham-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 22:03:53,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 22:03:53,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 22:03:53,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 22:03:53,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 22:03:53,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 22:03:53,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 22:03:53,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 22:03:53,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 22:03:53,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 22:03:53,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 22:03:53,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 22:03:53,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 22:03:53,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 22:03:53,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 22:03:53,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 22:03:53,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 22:03:53,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 22:03:53,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 22:03:53,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 22:03:53,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 22:03:53,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 22:03:53,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 22:03:53,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 22:03:53,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 22:03:53,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-14 22:03:53,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-14 22:03:53,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-14 22:03:53,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-14 22:03:53,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-14 22:03:53,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-14 22:03:53,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-14 22:03:53,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-14 22:03:53,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 22:03:53,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 22:03:53,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 22:03:53,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 22:03:53,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 22:03:53,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 22:03:53,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 22:03:53,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 22:03:53,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 22:03:53,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 22:03:53,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 22:03:53,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:03:53,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 22:03:53,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 22:03:53,557 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 22:03:53,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 22:03:53,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 22:03:53,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 22:03:53,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 22:03:53,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 22:03:53,865 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 22:03:53,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-02-14 22:03:53,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3279a1b56/2fab5c0a520f4e85a0bdeb2c49b2ec89/FLAG91a13d6ce [2022-02-14 22:03:54,435 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 22:03:54,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-02-14 22:03:54,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3279a1b56/2fab5c0a520f4e85a0bdeb2c49b2ec89/FLAG91a13d6ce [2022-02-14 22:03:54,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3279a1b56/2fab5c0a520f4e85a0bdeb2c49b2ec89 [2022-02-14 22:03:54,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 22:03:54,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 22:03:54,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 22:03:54,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 22:03:54,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 22:03:54,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:03:54" (1/1) ... [2022-02-14 22:03:54,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a37d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:54, skipping insertion in model container [2022-02-14 22:03:54,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:03:54" (1/1) ... [2022-02-14 22:03:54,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 22:03:54,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 22:03:55,036 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/bresenham-ll_valuebound5.c[597,610] [2022-02-14 22:03:55,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:03:55,084 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 22:03:55,096 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/bresenham-ll_valuebound5.c[597,610] [2022-02-14 22:03:55,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:03:55,122 INFO L208 MainTranslator]: Completed translation [2022-02-14 22:03:55,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55 WrapperNode [2022-02-14 22:03:55,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 22:03:55,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 22:03:55,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 22:03:55,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 22:03:55,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 22:03:55,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 22:03:55,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 22:03:55,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 22:03:55,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:03:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:55,189 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) [2022-02-14 22:03:55,219 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 [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 22:03:55,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 22:03:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 22:03:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 22:03:55,299 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 22:03:55,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 22:03:55,528 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 22:03:55,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 22:03:55,535 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 22:03:55,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55 BoogieIcfgContainer [2022-02-14 22:03:55,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 22:03:55,538 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 22:03:55,538 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 22:03:55,545 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 22:03:55,561 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55" (1/1) ... [2022-02-14 22:03:55,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:03:55 BasicIcfg [2022-02-14 22:03:55,593 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 22:03:55,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 22:03:55,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 22:03:55,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 22:03:55,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:03:54" (1/4) ... [2022-02-14 22:03:55,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20437d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:03:55" (2/4) ... [2022-02-14 22:03:55,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20437d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:03:55" (3/4) ... [2022-02-14 22:03:55,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20437d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:03:55, skipping insertion in model container [2022-02-14 22:03:55,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:03:55" (4/4) ... [2022-02-14 22:03:55,607 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.cJordan [2022-02-14 22:03:55,613 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 22:03:55,614 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 22:03:55,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 22:03:55,684 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 22:03:55,684 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 22:03:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 22:03:55,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 22:03:55,711 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:55,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:55,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1563578423, now seen corresponding path program 1 times [2022-02-14 22:03:55,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:55,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308263939] [2022-02-14 22:03:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:55,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 22:03:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 22:03:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 22:03:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:55,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:55,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308263939] [2022-02-14 22:03:55,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308263939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:03:55,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:03:55,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 22:03:55,996 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520566713] [2022-02-14 22:03:55,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:03:56,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 22:03:56,002 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 22:03:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 22:03:56,038 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 22:03:56,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:56,113 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-02-14 22:03:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 22:03:56,116 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-02-14 22:03:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:56,124 INFO L225 Difference]: With dead ends: 32 [2022-02-14 22:03:56,124 INFO L226 Difference]: Without dead ends: 27 [2022-02-14 22:03:56,126 INFO L932 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 [2022-02-14 22:03:56,131 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:56,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:03:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-14 22:03:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-14 22:03:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-14 22:03:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-02-14 22:03:56,174 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-02-14 22:03:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:56,176 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-02-14 22:03:56,176 INFO L471 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-14 22:03:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-02-14 22:03:56,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-14 22:03:56,178 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:56,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:56,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 22:03:56,179 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1863481077, now seen corresponding path program 1 times [2022-02-14 22:03:56,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:56,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759793168] [2022-02-14 22:03:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:56,219 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:56,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291010943] [2022-02-14 22:03:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:56,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:56,227 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) [2022-02-14 22:03:56,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 22:03:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:56,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-14 22:03:56,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:56,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:03:56,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:56,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759793168] [2022-02-14 22:03:56,437 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:56,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291010943] [2022-02-14 22:03:56,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291010943] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:03:56,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:03:56,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 22:03:56,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194333615] [2022-02-14 22:03:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:03:56,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 22:03:56,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 22:03:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:03:56,441 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 22:03:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:56,523 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-02-14 22:03:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 22:03:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-02-14 22:03:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:56,525 INFO L225 Difference]: With dead ends: 37 [2022-02-14 22:03:56,526 INFO L226 Difference]: Without dead ends: 35 [2022-02-14 22:03:56,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-14 22:03:56,527 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:56,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:03:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-14 22:03:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-02-14 22:03:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-14 22:03:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-02-14 22:03:56,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-02-14 22:03:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:56,537 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-02-14 22:03:56,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-14 22:03:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-02-14 22:03:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-14 22:03:56,538 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:56,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:56,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-14 22:03:56,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:56,760 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:56,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash -646008129, now seen corresponding path program 1 times [2022-02-14 22:03:56,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:56,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986910673] [2022-02-14 22:03:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:56,780 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:56,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545731516] [2022-02-14 22:03:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:56,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:56,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:56,785 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) [2022-02-14 22:03:56,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-14 22:03:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:56,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-14 22:03:56,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-14 22:03:57,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:03:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:57,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:57,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986910673] [2022-02-14 22:03:57,338 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:57,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545731516] [2022-02-14 22:03:57,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545731516] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:03:57,338 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:03:57,338 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-02-14 22:03:57,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306252564] [2022-02-14 22:03:57,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:03:57,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 22:03:57,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 22:03:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-02-14 22:03:57,342 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-14 22:03:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:57,699 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-02-14 22:03:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-14 22:03:57,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-02-14 22:03:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:57,703 INFO L225 Difference]: With dead ends: 46 [2022-02-14 22:03:57,703 INFO L226 Difference]: Without dead ends: 42 [2022-02-14 22:03:57,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-14 22:03:57,705 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:57,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 138 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-14 22:03:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-02-14 22:03:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-02-14 22:03:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-14 22:03:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-02-14 22:03:57,711 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-02-14 22:03:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:57,711 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-02-14 22:03:57,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-02-14 22:03:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-02-14 22:03:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-14 22:03:57,713 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:57,713 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:57,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-14 22:03:57,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-14 22:03:57,920 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:57,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1661983408, now seen corresponding path program 1 times [2022-02-14 22:03:57,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:57,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483852332] [2022-02-14 22:03:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:57,935 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:57,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792045716] [2022-02-14 22:03:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:03:57,937 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) [2022-02-14 22:03:57,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-14 22:03:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:03:57,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-14 22:03:57,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:03:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:58,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:03:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-02-14 22:03:59,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:03:59,016 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483852332] [2022-02-14 22:03:59,016 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:03:59,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792045716] [2022-02-14 22:03:59,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792045716] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:03:59,017 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:03:59,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-02-14 22:03:59,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756061166] [2022-02-14 22:03:59,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:03:59,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-14 22:03:59,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:03:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-14 22:03:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-02-14 22:03:59,022 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:03:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:03:59,741 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-14 22:03:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-14 22:03:59,741 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-02-14 22:03:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:03:59,742 INFO L225 Difference]: With dead ends: 59 [2022-02-14 22:03:59,742 INFO L226 Difference]: Without dead ends: 53 [2022-02-14 22:03:59,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-02-14 22:03:59,744 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-14 22:03:59,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 248 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-02-14 22:03:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-02-14 22:03:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-02-14 22:03:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-14 22:03:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-02-14 22:03:59,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 39 [2022-02-14 22:03:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:03:59,752 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-02-14 22:03:59,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:03:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-02-14 22:03:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-14 22:03:59,753 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:03:59,754 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:03:59,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-14 22:03:59,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:03:59,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:03:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:03:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1381917339, now seen corresponding path program 1 times [2022-02-14 22:03:59,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:03:59,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646809915] [2022-02-14 22:03:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:03:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:03:59,990 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:03:59,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782185858] [2022-02-14 22:04:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:00,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:00,003 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) [2022-02-14 22:04:00,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-14 22:04:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:04:00,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-14 22:04:00,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:00,266 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:00,277 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-02-14 22:04:04,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-02-14 22:04:04,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:04,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646809915] [2022-02-14 22:04:04,574 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:04,575 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782185858] [2022-02-14 22:04:04,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782185858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:04,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:04,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-02-14 22:04:04,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984467984] [2022-02-14 22:04:04,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:04,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 22:04:04,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 22:04:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-02-14 22:04:04,577 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:04:06,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:10,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:12,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:14,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:16,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:18,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:20,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:04:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:23,018 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-02-14 22:04:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:04:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-02-14 22:04:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:23,019 INFO L225 Difference]: With dead ends: 59 [2022-02-14 22:04:23,020 INFO L226 Difference]: Without dead ends: 55 [2022-02-14 22:04:23,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-02-14 22:04:23,021 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 15 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:23,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 186 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 139 Invalid, 7 Unknown, 0 Unchecked, 14.2s Time] [2022-02-14 22:04:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-02-14 22:04:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-02-14 22:04:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-14 22:04:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-02-14 22:04:23,026 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-02-14 22:04:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:23,027 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-02-14 22:04:23,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-02-14 22:04:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-02-14 22:04:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:23,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:23,028 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:23,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-14 22:04:23,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:23,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash -545218702, now seen corresponding path program 1 times [2022-02-14 22:04:23,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:23,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541504122] [2022-02-14 22:04:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:23,247 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:23,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83102601] [2022-02-14 22:04:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:23,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:23,249 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) [2022-02-14 22:04:23,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-14 22:04:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:04:23,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 22:04:23,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:23,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:23,799 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:23,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541504122] [2022-02-14 22:04:23,799 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:23,799 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83102601] [2022-02-14 22:04:23,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83102601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:23,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:23,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-02-14 22:04:23,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137914515] [2022-02-14 22:04:23,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:23,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-14 22:04:23,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-14 22:04:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-02-14 22:04:23,801 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 22:04:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:23,986 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2022-02-14 22:04:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:04:23,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-02-14 22:04:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:23,988 INFO L225 Difference]: With dead ends: 72 [2022-02-14 22:04:23,988 INFO L226 Difference]: Without dead ends: 72 [2022-02-14 22:04:23,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-14 22:04:23,989 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:23,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 241 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:04:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-02-14 22:04:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-02-14 22:04:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-14 22:04:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-02-14 22:04:23,998 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-02-14 22:04:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-02-14 22:04:23,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-02-14 22:04:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-02-14 22:04:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:24,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:24,003 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:24,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-14 22:04:24,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:24,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash 494880272, now seen corresponding path program 2 times [2022-02-14 22:04:24,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:24,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398904467] [2022-02-14 22:04:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:24,247 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:24,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816086665] [2022-02-14 22:04:24,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 22:04:24,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:24,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:24,249 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) [2022-02-14 22:04:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-14 22:04:24,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 22:04:24,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:04:24,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-14 22:04:24,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-14 22:04:24,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:04:24,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:24,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398904467] [2022-02-14 22:04:24,551 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:24,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816086665] [2022-02-14 22:04:24,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816086665] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:24,552 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:24,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-02-14 22:04:24,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584961690] [2022-02-14 22:04:24,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:24,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 22:04:24,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 22:04:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:04:24,554 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-02-14 22:04:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:04:24,625 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2022-02-14 22:04:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 22:04:24,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 57 [2022-02-14 22:04:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:04:24,627 INFO L225 Difference]: With dead ends: 77 [2022-02-14 22:04:24,627 INFO L226 Difference]: Without dead ends: 77 [2022-02-14 22:04:24,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-14 22:04:24,630 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:04:24,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 134 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:04:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-02-14 22:04:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-02-14 22:04:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 15 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-14 22:04:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-02-14 22:04:24,646 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 57 [2022-02-14 22:04:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:04:24,646 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-02-14 22:04:24,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-02-14 22:04:24,646 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-02-14 22:04:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-02-14 22:04:24,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:04:24,647 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:04:24,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-14 22:04:24,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:24,848 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:04:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:04:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1739644753, now seen corresponding path program 3 times [2022-02-14 22:04:24,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:04:24,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295531088] [2022-02-14 22:04:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:04:24,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:04:24,860 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:04:24,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090825811] [2022-02-14 22:04:24,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-14 22:04:24,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:04:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:04:24,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 22:04:24,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-14 22:04:24,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-14 22:04:24,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:04:24,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-14 22:04:24,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:04:26,168 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:26,173 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:26,175 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-02-14 22:04:32,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:04:33,277 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:34,551 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 22:04:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-02-14 22:04:54,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:04:54,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295531088] [2022-02-14 22:04:54,220 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:04:54,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090825811] [2022-02-14 22:04:54,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090825811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:04:54,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:04:54,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-02-14 22:04:54,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652080166] [2022-02-14 22:04:54,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:04:54,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-14 22:04:54,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:04:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-14 22:04:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=497, Unknown=5, NotChecked=0, Total=600 [2022-02-14 22:04:54,222 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-14 22:05:00,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-14 22:05:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:05:03,144 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-02-14 22:05:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-14 22:05:03,144 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-02-14 22:05:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:05:03,145 INFO L225 Difference]: With dead ends: 78 [2022-02-14 22:05:03,145 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 22:05:03,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=205, Invalid=980, Unknown=5, NotChecked=0, Total=1190 [2022-02-14 22:05:03,146 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-14 22:05:03,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 151 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 181 Invalid, 0 Unknown, 41 Unchecked, 2.5s Time] [2022-02-14 22:05:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 22:05:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 22:05:03,147 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) [2022-02-14 22:05:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 22:05:03,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-02-14 22:05:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:05:03,147 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 22:05:03,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-02-14 22:05:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 22:05:03,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 22:05:03,150 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 22:05:03,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-14 22:05:03,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:05:03,370 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-02-14 22:05:03,371 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 22:05:03,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:05:03 BasicIcfg [2022-02-14 22:05:03,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 22:05:03,374 INFO L158 Benchmark]: Toolchain (without parser) took 68553.21ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 119.8MB in the beginning and 150.7MB in the end (delta: -30.9MB). Peak memory consumption was 5.1MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,374 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 168.8MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 22:05:03,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.60ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 119.7MB in the beginning and 180.6MB in the end (delta: -60.9MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,375 INFO L158 Benchmark]: Boogie Preprocessor took 29.16ms. Allocated memory is still 203.4MB. Free memory was 180.6MB in the beginning and 179.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,375 INFO L158 Benchmark]: RCFGBuilder took 383.81ms. Allocated memory is still 203.4MB. Free memory was 179.2MB in the beginning and 167.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,375 INFO L158 Benchmark]: IcfgTransformer took 55.25ms. Allocated memory is still 203.4MB. Free memory was 167.7MB in the beginning and 166.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,375 INFO L158 Benchmark]: TraceAbstraction took 67778.47ms. Allocated memory is still 203.4MB. Free memory was 165.9MB in the beginning and 150.7MB in the end (delta: 15.2MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2022-02-14 22:05:03,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 168.8MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 298.60ms. Allocated memory was 168.8MB in the beginning and 203.4MB in the end (delta: 34.6MB). Free memory was 119.7MB in the beginning and 180.6MB in the end (delta: -60.9MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.16ms. Allocated memory is still 203.4MB. Free memory was 180.6MB in the beginning and 179.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 383.81ms. Allocated memory is still 203.4MB. Free memory was 179.2MB in the beginning and 167.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 55.25ms. Allocated memory is still 203.4MB. Free memory was 167.7MB in the beginning and 166.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 67778.47ms. Allocated memory is still 203.4MB. Free memory was 165.9MB in the beginning and 150.7MB in the end (delta: 15.2MB). Peak memory consumption was 16.1MB. 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 17.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 143 mSDsluCounter, 1233 SdHoareTripleChecker+Invalid, 17.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 110 IncrementalHoareTripleChecker+Unchecked, 1035 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 941 IncrementalHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 198 mSDtfsCounter, 941 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 646 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, InterpolantAutomatonStates: 99, 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, 8 MinimizatonAttempts, 31 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 336 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 612 ConstructedInterpolants, 6 QuantifiedInterpolants, 3260 SizeOfPredicates, 49 NumberOfNonLiveVariables, 873 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 389/480 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! [2022-02-14 22:05:03,597 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-02-14 22:05:03,641 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 137 Received shutdown request...