/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/egcd-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 22:43:15,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 22:43:15,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 22:43:15,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 22:43:15,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 22:43:15,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 22:43:15,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 22:43:15,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 22:43:15,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 22:43:15,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 22:43:15,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 22:43:15,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 22:43:15,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 22:43:15,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 22:43:15,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 22:43:15,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 22:43:15,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 22:43:15,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 22:43:15,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 22:43:15,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 22:43:15,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 22:43:15,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 22:43:15,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 22:43:15,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 22:43:15,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 22:43:15,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 22:43:15,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 22:43:15,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 22:43:15,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 22:43:15,445 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 22:43:15,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 22:43:15,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 22:43:15,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 22:43:15,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 22:43:15,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 22:43:15,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 22:43:15,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:43:15,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 22:43:15,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 22:43:15,451 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 22:43:15,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 22:43:15,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 22:43:15,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 22:43:15,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 22:43:15,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 22:43:15,711 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 22:43:15,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-02-14 22:43:15,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d164680b/c288c1532c104012bdf7cb97da187c84/FLAG10c42b2ff [2022-02-14 22:43:16,227 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 22:43:16,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound2.c [2022-02-14 22:43:16,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d164680b/c288c1532c104012bdf7cb97da187c84/FLAG10c42b2ff [2022-02-14 22:43:16,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d164680b/c288c1532c104012bdf7cb97da187c84 [2022-02-14 22:43:16,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 22:43:16,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 22:43:16,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 22:43:16,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 22:43:16,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 22:43:16,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca6301b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16, skipping insertion in model container [2022-02-14 22:43:16,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 22:43:16,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 22:43:16,463 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/egcd-ll_valuebound2.c[489,502] [2022-02-14 22:43:16,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:43:16,519 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 22:43:16,532 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/egcd-ll_valuebound2.c[489,502] [2022-02-14 22:43:16,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 22:43:16,566 INFO L208 MainTranslator]: Completed translation [2022-02-14 22:43:16,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16 WrapperNode [2022-02-14 22:43:16,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 22:43:16,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 22:43:16,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 22:43:16,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 22:43:16,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 22:43:16,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 22:43:16,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 22:43:16,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 22:43:16,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 22:43:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:16,657 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 22:43:16,667 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 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 22:43:16,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 22:43:16,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 22:43:16,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 22:43:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 22:43:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 22:43:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 22:43:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 22:43:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 22:43:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 22:43:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 22:43:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 22:43:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 22:43:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 22:43:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 22:43:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 22:43:16,772 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 22:43:16,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 22:43:16,911 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 22:43:16,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 22:43:16,917 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 22:43:16,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:43:16 BoogieIcfgContainer [2022-02-14 22:43:16,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 22:43:16,919 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 22:43:16,919 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 22:43:16,936 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 22:43:16,939 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:43:16" (1/1) ... [2022-02-14 22:43:16,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:43:16 BasicIcfg [2022-02-14 22:43:16,973 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 22:43:16,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 22:43:16,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 22:43:16,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 22:43:16,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:43:16" (1/4) ... [2022-02-14 22:43:16,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d2f621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:43:16, skipping insertion in model container [2022-02-14 22:43:16,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:43:16" (2/4) ... [2022-02-14 22:43:16,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d2f621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:43:16, skipping insertion in model container [2022-02-14 22:43:16,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:43:16" (3/4) ... [2022-02-14 22:43:16,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d2f621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:43:16, skipping insertion in model container [2022-02-14 22:43:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 10:43:16" (4/4) ... [2022-02-14 22:43:16,981 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.cJordan [2022-02-14 22:43:17,005 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 22:43:17,005 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 22:43:17,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 22:43:17,063 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 22:43:17,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 22:43:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-02-14 22:43:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 22:43:17,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:17,091 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:17,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-02-14 22:43:17,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:17,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079612285] [2022-02-14 22:43:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 22:43:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-14 22:43:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-14 22:43:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-14 22:43:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-14 22:43:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 22:43:17,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:17,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079612285] [2022-02-14 22:43:17,347 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079612285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:17,347 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:17,347 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 22:43:17,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904434198] [2022-02-14 22:43:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:17,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 22:43:17,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 22:43:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 22:43:17,381 INFO L87 Difference]: Start difference. First operand has 37 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-14 22:43:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:17,476 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-02-14 22:43:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 22:43:17,478 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-02-14 22:43:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:17,488 INFO L225 Difference]: With dead ends: 37 [2022-02-14 22:43:17,489 INFO L226 Difference]: Without dead ends: 32 [2022-02-14 22:43:17,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 22:43:17,495 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:17,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:43:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-14 22:43:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-14 22:43:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-02-14 22:43:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-02-14 22:43:17,538 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-02-14 22:43:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:17,538 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-02-14 22:43:17,538 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-14 22:43:17,539 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-02-14 22:43:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-14 22:43:17,541 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:17,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:17,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 22:43:17,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-02-14 22:43:17,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:17,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925898153] [2022-02-14 22:43:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:17,580 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:17,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781926904] [2022-02-14 22:43:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:17,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:17,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:17,591 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 22:43:17,611 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 22:43:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:17,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 22:43:17,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 22:43:17,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:43:17,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:17,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925898153] [2022-02-14 22:43:17,822 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:17,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781926904] [2022-02-14 22:43:17,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781926904] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:17,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:17,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 22:43:17,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365285800] [2022-02-14 22:43:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:17,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 22:43:17,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:17,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 22:43:17,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 22:43:17,826 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-14 22:43:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:17,871 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-02-14 22:43:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 22:43:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-02-14 22:43:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:17,877 INFO L225 Difference]: With dead ends: 46 [2022-02-14 22:43:17,877 INFO L226 Difference]: Without dead ends: 46 [2022-02-14 22:43:17,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:43:17,878 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:17,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:43:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-14 22:43:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-02-14 22:43:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-14 22:43:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-02-14 22:43:17,890 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-02-14 22:43:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:17,890 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-02-14 22:43:17,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-02-14 22:43:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-02-14 22:43:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-14 22:43:17,891 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:17,892 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:17,928 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 22:43:18,103 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 22:43:18,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-02-14 22:43:18,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:18,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866713381] [2022-02-14 22:43:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:18,119 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:18,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020355332] [2022-02-14 22:43:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:18,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:18,121 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 22:43:18,122 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 22:43:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:18,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-14 22:43:18,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-14 22:43:18,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:43:18,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:18,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866713381] [2022-02-14 22:43:18,464 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:18,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020355332] [2022-02-14 22:43:18,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020355332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:18,465 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:18,465 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 22:43:18,465 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201938135] [2022-02-14 22:43:18,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:18,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 22:43:18,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 22:43:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-14 22:43:18,466 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-14 22:43:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:18,597 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-02-14 22:43:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:43:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-02-14 22:43:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:18,601 INFO L225 Difference]: With dead ends: 50 [2022-02-14 22:43:18,601 INFO L226 Difference]: Without dead ends: 50 [2022-02-14 22:43:18,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-14 22:43:18,605 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:18,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 262 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:43:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-14 22:43:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-02-14 22:43:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-14 22:43:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-02-14 22:43:18,627 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-02-14 22:43:18,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:18,628 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-02-14 22:43:18,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-02-14 22:43:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-02-14 22:43:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-14 22:43:18,629 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:18,629 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:18,656 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 22:43:18,853 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 22:43:18,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-02-14 22:43:18,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:18,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004653103] [2022-02-14 22:43:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:18,869 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:18,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633562147] [2022-02-14 22:43:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:18,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:18,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:18,872 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 22:43:18,874 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 22:43:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:18,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-14 22:43:18,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-14 22:43:19,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:43:19,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:19,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004653103] [2022-02-14 22:43:19,237 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:19,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633562147] [2022-02-14 22:43:19,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633562147] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:19,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:19,238 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-14 22:43:19,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226745630] [2022-02-14 22:43:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:19,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-14 22:43:19,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-14 22:43:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-02-14 22:43:19,239 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-14 22:43:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:19,341 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-02-14 22:43:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-14 22:43:19,342 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 43 [2022-02-14 22:43:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:19,344 INFO L225 Difference]: With dead ends: 72 [2022-02-14 22:43:19,344 INFO L226 Difference]: Without dead ends: 70 [2022-02-14 22:43:19,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-14 22:43:19,345 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:19,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 214 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:43:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-14 22:43:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-14 22:43:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-14 22:43:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-02-14 22:43:19,358 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-02-14 22:43:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:19,359 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-02-14 22:43:19,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-14 22:43:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-02-14 22:43:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-14 22:43:19,361 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:19,361 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:19,378 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 22:43:19,567 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 22:43:19,568 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:19,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-02-14 22:43:19,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:19,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748043016] [2022-02-14 22:43:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:19,580 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:19,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018371016] [2022-02-14 22:43:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:19,581 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 22:43:19,594 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 22:43:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:19,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-14 22:43:19,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-14 22:43:19,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:43:19,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:19,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748043016] [2022-02-14 22:43:19,720 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:19,720 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018371016] [2022-02-14 22:43:19,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018371016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:19,720 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:19,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 22:43:19,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464139996] [2022-02-14 22:43:19,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 22:43:19,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:19,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 22:43:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 22:43:19,721 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-14 22:43:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:19,756 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2022-02-14 22:43:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 22:43:19,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 49 [2022-02-14 22:43:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:19,759 INFO L225 Difference]: With dead ends: 74 [2022-02-14 22:43:19,759 INFO L226 Difference]: Without dead ends: 74 [2022-02-14 22:43:19,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:43:19,760 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:19,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:43:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-14 22:43:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-02-14 22:43:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-14 22:43:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-02-14 22:43:19,776 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-02-14 22:43:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:19,777 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-02-14 22:43:19,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-02-14 22:43:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-02-14 22:43:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-14 22:43:19,778 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:19,778 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:19,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-14 22:43:19,983 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 22:43:19,984 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-02-14 22:43:19,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:19,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333259034] [2022-02-14 22:43:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:19,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:19,997 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:19,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940089992] [2022-02-14 22:43:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:19,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:19,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:19,999 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 22:43:20,010 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 22:43:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-14 22:43:20,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-02-14 22:43:20,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-14 22:43:20,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:20,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333259034] [2022-02-14 22:43:20,197 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:20,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940089992] [2022-02-14 22:43:20,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940089992] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 22:43:20,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 22:43:20,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 22:43:20,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619539560] [2022-02-14 22:43:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 22:43:20,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 22:43:20,198 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 22:43:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 22:43:20,199 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-14 22:43:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:20,231 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2022-02-14 22:43:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 22:43:20,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-02-14 22:43:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:20,233 INFO L225 Difference]: With dead ends: 82 [2022-02-14 22:43:20,233 INFO L226 Difference]: Without dead ends: 81 [2022-02-14 22:43:20,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-14 22:43:20,234 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:20,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:43:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-02-14 22:43:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-02-14 22:43:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-14 22:43:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-02-14 22:43:20,242 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-02-14 22:43:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:20,243 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-02-14 22:43:20,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-02-14 22:43:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-02-14 22:43:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-14 22:43:20,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:20,244 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:20,270 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 22:43:20,467 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 22:43:20,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-02-14 22:43:20,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:20,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861587921] [2022-02-14 22:43:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:20,480 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:20,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954139350] [2022-02-14 22:43:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:20,482 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 22:43:20,512 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 22:43:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:20,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 22:43:20,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-14 22:43:20,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:43:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-14 22:43:20,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:20,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861587921] [2022-02-14 22:43:20,809 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:20,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954139350] [2022-02-14 22:43:20,809 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954139350] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:43:20,809 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:43:20,809 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-02-14 22:43:20,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957562181] [2022-02-14 22:43:20,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:43:20,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-14 22:43:20,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-14 22:43:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-14 22:43:20,815 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-14 22:43:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:20,924 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2022-02-14 22:43:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 22:43:20,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2022-02-14 22:43:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:20,925 INFO L225 Difference]: With dead ends: 86 [2022-02-14 22:43:20,925 INFO L226 Difference]: Without dead ends: 84 [2022-02-14 22:43:20,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-14 22:43:20,926 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:20,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 178 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:43:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-02-14 22:43:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-02-14 22:43:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-14 22:43:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-02-14 22:43:20,934 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-02-14 22:43:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:20,934 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-02-14 22:43:20,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-02-14 22:43:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-02-14 22:43:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-02-14 22:43:20,935 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:20,936 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:20,958 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 22:43:21,155 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 22:43:21,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-02-14 22:43:21,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:21,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526184148] [2022-02-14 22:43:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:21,173 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:21,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823458144] [2022-02-14 22:43:21,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 22:43:21,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:21,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:21,186 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 22:43:21,188 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 22:43:21,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 22:43:21,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:43:21,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-14 22:43:21,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-02-14 22:43:21,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:43:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-14 22:43:21,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:21,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526184148] [2022-02-14 22:43:21,865 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:21,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823458144] [2022-02-14 22:43:21,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823458144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:43:21,865 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:43:21,865 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-02-14 22:43:21,865 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279641814] [2022-02-14 22:43:21,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:43:21,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-14 22:43:21,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-14 22:43:21,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-02-14 22:43:21,867 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-14 22:43:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:22,593 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2022-02-14 22:43:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-14 22:43:22,594 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 56 [2022-02-14 22:43:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:22,595 INFO L225 Difference]: With dead ends: 117 [2022-02-14 22:43:22,595 INFO L226 Difference]: Without dead ends: 117 [2022-02-14 22:43:22,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-02-14 22:43:22,596 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:22,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 224 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 22:43:22,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-02-14 22:43:22,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 96. [2022-02-14 22:43:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 58 states have internal predecessors, (62), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-14 22:43:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2022-02-14 22:43:22,605 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 56 [2022-02-14 22:43:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:22,605 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2022-02-14 22:43:22,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-14 22:43:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2022-02-14 22:43:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-14 22:43:22,606 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:22,606 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 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, 1] [2022-02-14 22:43:22,631 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 22:43:22,829 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 22:43:22,829 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:22,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1746772058, now seen corresponding path program 1 times [2022-02-14 22:43:22,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:22,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374997787] [2022-02-14 22:43:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:22,840 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:22,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122350131] [2022-02-14 22:43:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:22,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:22,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 22:43:22,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-14 22:43:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:22,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2022-02-14 22:43:22,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-02-14 22:43:23,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:43:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-02-14 22:43:23,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:23,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374997787] [2022-02-14 22:43:23,419 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:23,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122350131] [2022-02-14 22:43:23,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122350131] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:43:23,419 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:43:23,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-02-14 22:43:23,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427734146] [2022-02-14 22:43:23,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:43:23,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-14 22:43:23,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-14 22:43:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-02-14 22:43:23,421 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-14 22:43:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:24,217 INFO L93 Difference]: Finished difference Result 131 states and 164 transitions. [2022-02-14 22:43:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-14 22:43:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 61 [2022-02-14 22:43:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:24,219 INFO L225 Difference]: With dead ends: 131 [2022-02-14 22:43:24,219 INFO L226 Difference]: Without dead ends: 122 [2022-02-14 22:43:24,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-02-14 22:43:24,220 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:24,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 247 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-14 22:43:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-02-14 22:43:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-02-14 22:43:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 68 states have internal predecessors, (71), 25 states have call successors, (25), 17 states have call predecessors, (25), 16 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-14 22:43:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2022-02-14 22:43:24,228 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 61 [2022-02-14 22:43:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:24,229 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2022-02-14 22:43:24,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 11 states have internal predecessors, (30), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2022-02-14 22:43:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2022-02-14 22:43:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-14 22:43:24,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:24,230 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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, 1, 1, 1] [2022-02-14 22:43:24,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-14 22:43:24,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-02-14 22:43:24,453 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:24,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-02-14 22:43:24,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:24,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815570837] [2022-02-14 22:43:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:24,464 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:24,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346923383] [2022-02-14 22:43:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:24,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:24,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:24,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 22:43:24,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-14 22:43:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 22:43:24,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 22:43:24,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-14 22:43:24,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:43:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-14 22:43:24,843 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:24,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815570837] [2022-02-14 22:43:24,843 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:24,843 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346923383] [2022-02-14 22:43:24,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346923383] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:43:24,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:43:24,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-02-14 22:43:24,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430560427] [2022-02-14 22:43:24,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:43:24,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 22:43:24,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 22:43:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-14 22:43:24,845 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-02-14 22:43:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:24,947 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-02-14 22:43:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 22:43:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 69 [2022-02-14 22:43:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:24,948 INFO L225 Difference]: With dead ends: 100 [2022-02-14 22:43:24,948 INFO L226 Difference]: Without dead ends: 86 [2022-02-14 22:43:24,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-02-14 22:43:24,949 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:24,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 180 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 22:43:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-02-14 22:43:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-02-14 22:43:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 54 states have internal predecessors, (55), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-14 22:43:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2022-02-14 22:43:24,954 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 69 [2022-02-14 22:43:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:24,954 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2022-02-14 22:43:24,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 7 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-02-14 22:43:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2022-02-14 22:43:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-02-14 22:43:24,955 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 22:43:24,956 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 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, 1, 1, 1] [2022-02-14 22:43:24,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-02-14 22:43:25,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-14 22:43:25,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 22:43:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 22:43:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -392102192, now seen corresponding path program 2 times [2022-02-14 22:43:25,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 22:43:25,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166489558] [2022-02-14 22:43:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 22:43:25,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 22:43:25,181 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-14 22:43:25,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275749878] [2022-02-14 22:43:25,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-14 22:43:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 22:43:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 22:43:25,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 22:43:25,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-14 22:43:25,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-14 22:43:25,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-14 22:43:25,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-14 22:43:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-14 22:43:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-14 22:43:25,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-14 22:43:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-02-14 22:43:25,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 22:43:25,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166489558] [2022-02-14 22:43:25,561 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-14 22:43:25,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275749878] [2022-02-14 22:43:25,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275749878] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-14 22:43:25,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-14 22:43:25,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-02-14 22:43:25,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465069626] [2022-02-14 22:43:25,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-14 22:43:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-14 22:43:25,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 22:43:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-14 22:43:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-14 22:43:25,563 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-14 22:43:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 22:43:25,658 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-02-14 22:43:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-14 22:43:25,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 69 [2022-02-14 22:43:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 22:43:25,659 INFO L225 Difference]: With dead ends: 59 [2022-02-14 22:43:25,659 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 22:43:25,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-14 22:43:25,659 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 22:43:25,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 161 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 22:43:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 22:43:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 22:43:25,660 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 22:43:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 22:43:25,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-02-14 22:43:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 22:43:25,661 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 22:43:25,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 10 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-02-14 22:43:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 22:43:25,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 22:43:25,663 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 22:43:25,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-14 22:43:25,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-14 22:43:25,866 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 22:43:25,867 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 22:43:25,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 10:43:25 BasicIcfg [2022-02-14 22:43:25,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 22:43:25,869 INFO L158 Benchmark]: Toolchain (without parser) took 9615.95ms. Allocated memory was 180.4MB in the beginning and 272.6MB in the end (delta: 92.3MB). Free memory was 125.4MB in the beginning and 209.4MB in the end (delta: -84.0MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,870 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 180.4MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 22:43:25,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.55ms. Allocated memory was 180.4MB in the beginning and 272.6MB in the end (delta: 92.3MB). Free memory was 125.3MB in the beginning and 245.3MB in the end (delta: -120.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,870 INFO L158 Benchmark]: Boogie Preprocessor took 47.51ms. Allocated memory is still 272.6MB. Free memory was 245.3MB in the beginning and 244.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,870 INFO L158 Benchmark]: RCFGBuilder took 298.41ms. Allocated memory is still 272.6MB. Free memory was 243.7MB in the beginning and 232.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,871 INFO L158 Benchmark]: IcfgTransformer took 54.49ms. Allocated memory is still 272.6MB. Free memory was 232.1MB in the beginning and 231.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,871 INFO L158 Benchmark]: TraceAbstraction took 8893.93ms. Allocated memory is still 272.6MB. Free memory was 230.6MB in the beginning and 209.4MB in the end (delta: 21.1MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2022-02-14 22:43:25,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 180.4MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 314.55ms. Allocated memory was 180.4MB in the beginning and 272.6MB in the end (delta: 92.3MB). Free memory was 125.3MB in the beginning and 245.3MB in the end (delta: -120.0MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.51ms. Allocated memory is still 272.6MB. Free memory was 245.3MB in the beginning and 244.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 298.41ms. Allocated memory is still 272.6MB. Free memory was 243.7MB in the beginning and 232.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 54.49ms. Allocated memory is still 272.6MB. Free memory was 232.1MB in the beginning and 231.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 8893.93ms. Allocated memory is still 272.6MB. Free memory was 230.6MB in the beginning and 209.4MB in the end (delta: 21.1MB). Peak memory consumption was 21.9MB. 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: 13]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 1965 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1570 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1304 IncrementalHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 395 mSDtfsCounter, 1304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 869 GetRequests, 750 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=9, InterpolantAutomatonStates: 95, 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, 11 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 849 ConstructedInterpolants, 0 QuantifiedInterpolants, 2629 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1423 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 908/1002 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 22:43:25,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...