/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_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 18:00:08,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 18:00:08,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 18:00:09,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 18:00:09,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 18:00:09,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 18:00:09,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 18:00:09,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 18:00:09,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 18:00:09,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 18:00:09,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 18:00:09,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 18:00:09,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 18:00:09,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 18:00:09,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 18:00:09,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 18:00:09,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 18:00:09,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 18:00:09,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 18:00:09,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 18:00:09,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 18:00:09,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 18:00:09,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 18:00:09,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 18:00:09,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 18:00:09,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-23 18:00:09,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-23 18:00:09,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-23 18:00:09,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-23 18:00:09,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-23 18:00:09,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-23 18:00:09,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-23 18:00:09,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-23 18:00:09,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 18:00:09,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 18:00:09,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 18:00:09,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-23 18:00:09,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 18:00:09,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 18:00:09,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 18:00:09,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-23 18:00:09,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 18:00:09,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-23 18:00:09,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 18:00:09,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 18:00:09,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 18:00:09,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 18:00:09,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 18:00:09,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 18:00:09,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 18:00:09,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 18:00:09,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 18:00:09,096 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 18:00:09,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 18:00:09,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 18:00:09,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 18:00:09,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 18:00:09,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 18:00:09,388 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 18:00:09,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound1.c [2022-02-23 18:00:09,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebfde62/dcad65328e5f47829557fbb10bd19f7f/FLAGb003a0fc8 [2022-02-23 18:00:09,917 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 18:00:09,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound1.c [2022-02-23 18:00:09,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebfde62/dcad65328e5f47829557fbb10bd19f7f/FLAGb003a0fc8 [2022-02-23 18:00:10,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3ebfde62/dcad65328e5f47829557fbb10bd19f7f [2022-02-23 18:00:10,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 18:00:10,329 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 18:00:10,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 18:00:10,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 18:00:10,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 18:00:10,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36962223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10, skipping insertion in model container [2022-02-23 18:00:10,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 18:00:10,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 18:00:10,702 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_valuebound1.c[489,502] [2022-02-23 18:00:10,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 18:00:10,762 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 18:00:10,789 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_valuebound1.c[489,502] [2022-02-23 18:00:10,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 18:00:10,840 INFO L208 MainTranslator]: Completed translation [2022-02-23 18:00:10,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10 WrapperNode [2022-02-23 18:00:10,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 18:00:10,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 18:00:10,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 18:00:10,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 18:00:10,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 18:00:10,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 18:00:10,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 18:00:10,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 18:00:10,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (1/1) ... [2022-02-23 18:00:10,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 18:00:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:10,946 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) [2022-02-23 18:00:10,955 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 [2022-02-23 18:00:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 18:00:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 18:00:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 18:00:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 18:00:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 18:00:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 18:00:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 18:00:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 18:00:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 18:00:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 18:00:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 18:00:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 18:00:10,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 18:00:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 18:00:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 18:00:10,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 18:00:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 18:00:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 18:00:10,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 18:00:10,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 18:00:11,059 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 18:00:11,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 18:00:11,223 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 18:00:11,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 18:00:11,240 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 18:00:11,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:00:11 BoogieIcfgContainer [2022-02-23 18:00:11,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 18:00:11,243 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 18:00:11,243 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 18:00:11,244 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 18:00:11,247 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:00:11" (1/1) ... [2022-02-23 18:00:11,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 06:00:11 BasicIcfg [2022-02-23 18:00:11,263 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 18:00:11,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 18:00:11,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 18:00:11,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 18:00:11,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:00:10" (1/4) ... [2022-02-23 18:00:11,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e983b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:00:11, skipping insertion in model container [2022-02-23 18:00:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:00:10" (2/4) ... [2022-02-23 18:00:11,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e983b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:00:11, skipping insertion in model container [2022-02-23 18:00:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:00:11" (3/4) ... [2022-02-23 18:00:11,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e983b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:00:11, skipping insertion in model container [2022-02-23 18:00:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 06:00:11" (4/4) ... [2022-02-23 18:00:11,271 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.cJordan [2022-02-23 18:00:11,275 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-23 18:00:11,276 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 18:00:11,315 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 18:00:11,321 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 [2022-02-23 18:00:11,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 18:00:11,337 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) [2022-02-23 18:00:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 18:00:11,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:11,345 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] [2022-02-23 18:00:11,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-02-23 18:00:11,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:11,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175053525] [2022-02-23 18:00:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 18:00:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 18:00:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 18:00:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 18:00:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 18:00:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:00:11,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:11,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175053525] [2022-02-23 18:00:11,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175053525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 18:00:11,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 18:00:11,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 18:00:11,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286377340] [2022-02-23 18:00:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 18:00:11,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 18:00:11,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 18:00:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 18:00:11,560 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) [2022-02-23 18:00:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:11,629 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-02-23 18:00:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 18:00:11,631 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 [2022-02-23 18:00:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:11,638 INFO L225 Difference]: With dead ends: 37 [2022-02-23 18:00:11,638 INFO L226 Difference]: Without dead ends: 32 [2022-02-23 18:00:11,639 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 [2022-02-23 18:00:11,647 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:11,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 18:00:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-02-23 18:00:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-02-23 18:00:11,689 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) [2022-02-23 18:00:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-02-23 18:00:11,693 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-02-23 18:00:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:11,694 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-02-23 18:00:11,695 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) [2022-02-23 18:00:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-02-23 18:00:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 18:00:11,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:11,698 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] [2022-02-23 18:00:11,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 18:00:11,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:11,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-02-23 18:00:11,702 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:11,702 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561070133] [2022-02-23 18:00:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:11,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:11,743 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:11,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057436848] [2022-02-23 18:00:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:11,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:11,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:11,747 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) [2022-02-23 18:00:11,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 18:00:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:11,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-23 18:00:11,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:00:12,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 18:00:12,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:12,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561070133] [2022-02-23 18:00:12,055 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:12,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057436848] [2022-02-23 18:00:12,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057436848] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 18:00:12,055 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 18:00:12,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 18:00:12,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200824514] [2022-02-23 18:00:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 18:00:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 18:00:12,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 18:00:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 18:00:12,059 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) [2022-02-23 18:00:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:12,108 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-02-23 18:00:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 18:00:12,109 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 [2022-02-23 18:00:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:12,110 INFO L225 Difference]: With dead ends: 46 [2022-02-23 18:00:12,110 INFO L226 Difference]: Without dead ends: 46 [2022-02-23 18:00:12,111 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 [2022-02-23 18:00:12,112 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 [2022-02-23 18:00:12,112 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] [2022-02-23 18:00:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-02-23 18:00:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-02-23 18:00:12,120 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) [2022-02-23 18:00:12,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-02-23 18:00:12,127 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-02-23 18:00:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:12,128 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-02-23 18:00:12,128 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) [2022-02-23 18:00:12,129 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-02-23 18:00:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-23 18:00:12,130 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:12,130 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] [2022-02-23 18:00:12,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-23 18:00:12,355 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 [2022-02-23 18:00:12,356 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-02-23 18:00:12,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:12,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407669496] [2022-02-23 18:00:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:12,415 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:12,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656124003] [2022-02-23 18:00:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:12,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:12,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:12,420 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) [2022-02-23 18:00:12,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 18:00:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:12,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-23 18:00:12,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 18:00:12,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:00:12,901 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:12,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407669496] [2022-02-23 18:00:12,903 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:12,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656124003] [2022-02-23 18:00:12,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656124003] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 18:00:12,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 18:00:12,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-02-23 18:00:12,904 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353980732] [2022-02-23 18:00:12,904 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 18:00:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 18:00:12,905 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 18:00:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-23 18:00:12,906 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-23 18:00:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:13,028 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-02-23 18:00:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 18:00:13,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2022-02-23 18:00:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:13,030 INFO L225 Difference]: With dead ends: 50 [2022-02-23 18:00:13,030 INFO L226 Difference]: Without dead ends: 50 [2022-02-23 18:00:13,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-23 18:00:13,031 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 20 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:13,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 215 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 18:00:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-23 18:00:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-02-23 18:00:13,037 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) [2022-02-23 18:00:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-02-23 18:00:13,040 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-02-23 18:00:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:13,040 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-02-23 18:00:13,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-23 18:00:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-02-23 18:00:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-02-23 18:00:13,041 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:13,041 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] [2022-02-23 18:00:13,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 18:00:13,260 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 [2022-02-23 18:00:13,260 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:13,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-02-23 18:00:13,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:13,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029101248] [2022-02-23 18:00:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:13,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:13,279 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:13,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186388196] [2022-02-23 18:00:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:13,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:13,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:13,281 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) [2022-02-23 18:00:13,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 18:00:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:13,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-23 18:00:13,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-23 18:00:13,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:00:13,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:13,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029101248] [2022-02-23 18:00:13,549 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:13,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186388196] [2022-02-23 18:00:13,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186388196] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 18:00:13,549 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-23 18:00:13,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-02-23 18:00:13,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720885699] [2022-02-23 18:00:13,549 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-23 18:00:13,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 18:00:13,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 18:00:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-23 18:00:13,551 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 18:00:13,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:13,635 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-02-23 18:00:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-23 18:00:13,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 43 [2022-02-23 18:00:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:13,638 INFO L225 Difference]: With dead ends: 72 [2022-02-23 18:00:13,638 INFO L226 Difference]: Without dead ends: 70 [2022-02-23 18:00:13,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-23 18:00:13,639 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:13,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 238 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 18:00:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-23 18:00:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-23 18:00:13,646 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) [2022-02-23 18:00:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-02-23 18:00:13,648 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-02-23 18:00:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-02-23 18:00:13,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-02-23 18:00:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-02-23 18:00:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-02-23 18:00:13,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:13,650 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] [2022-02-23 18:00:13,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-23 18:00:13,872 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 [2022-02-23 18:00:13,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-02-23 18:00:13,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:13,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011316648] [2022-02-23 18:00:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:13,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:13,900 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:13,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844185686] [2022-02-23 18:00:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:13,902 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) [2022-02-23 18:00:13,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 18:00:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-23 18:00:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-23 18:00:14,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 18:00:14,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:14,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011316648] [2022-02-23 18:00:14,070 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:14,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844185686] [2022-02-23 18:00:14,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844185686] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 18:00:14,071 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 18:00:14,071 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-23 18:00:14,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274545070] [2022-02-23 18:00:14,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 18:00:14,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 18:00:14,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 18:00:14,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-23 18:00:14,072 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) [2022-02-23 18:00:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:14,094 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2022-02-23 18:00:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 18:00:14,095 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 [2022-02-23 18:00:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:14,096 INFO L225 Difference]: With dead ends: 74 [2022-02-23 18:00:14,096 INFO L226 Difference]: Without dead ends: 74 [2022-02-23 18:00:14,096 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 [2022-02-23 18:00:14,097 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 [2022-02-23 18:00:14,097 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] [2022-02-23 18:00:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-02-23 18:00:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-02-23 18:00:14,102 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) [2022-02-23 18:00:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-02-23 18:00:14,102 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-02-23 18:00:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:14,103 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-02-23 18:00:14,103 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) [2022-02-23 18:00:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-02-23 18:00:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-02-23 18:00:14,104 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:14,104 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] [2022-02-23 18:00:14,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 18:00:14,320 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 [2022-02-23 18:00:14,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-02-23 18:00:14,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:14,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514147585] [2022-02-23 18:00:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:14,346 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:14,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040610787] [2022-02-23 18:00:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:14,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:14,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:14,347 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) [2022-02-23 18:00:14,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 18:00:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:14,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-23 18:00:14,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:00:14,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:00:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 18:00:14,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:14,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514147585] [2022-02-23 18:00:14,778 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:14,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040610787] [2022-02-23 18:00:14,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040610787] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 18:00:14,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 18:00:14,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-02-23 18:00:14,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22357912] [2022-02-23 18:00:14,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 18:00:14,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 18:00:14,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 18:00:14,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-23 18:00:14,782 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-02-23 18:00:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:14,860 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2022-02-23 18:00:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 18:00:14,860 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 51 [2022-02-23 18:00:14,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:14,863 INFO L225 Difference]: With dead ends: 65 [2022-02-23 18:00:14,863 INFO L226 Difference]: Without dead ends: 65 [2022-02-23 18:00:14,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-23 18:00:14,865 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:14,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 224 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 18:00:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-02-23 18:00:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-02-23 18:00:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-23 18:00:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2022-02-23 18:00:14,878 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 51 [2022-02-23 18:00:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:14,879 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2022-02-23 18:00:14,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2022-02-23 18:00:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2022-02-23 18:00:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-23 18:00:14,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:14,881 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] [2022-02-23 18:00:14,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-23 18:00:15,099 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 [2022-02-23 18:00:15,100 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:15,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:15,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-02-23 18:00:15,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:15,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276401406] [2022-02-23 18:00:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:15,118 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:15,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154990766] [2022-02-23 18:00:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:15,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:15,132 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) [2022-02-23 18:00:15,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 18:00:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:15,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 18:00:15,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-23 18:00:15,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:00:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-02-23 18:00:15,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:15,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276401406] [2022-02-23 18:00:15,420 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:15,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154990766] [2022-02-23 18:00:15,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154990766] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 18:00:15,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 18:00:15,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-02-23 18:00:15,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89565478] [2022-02-23 18:00:15,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 18:00:15,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-23 18:00:15,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-23 18:00:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-02-23 18:00:15,422 INFO L87 Difference]: Start difference. First operand 65 states and 84 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) [2022-02-23 18:00:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:15,531 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2022-02-23 18:00:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 18:00:15,532 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 [2022-02-23 18:00:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:15,533 INFO L225 Difference]: With dead ends: 72 [2022-02-23 18:00:15,533 INFO L226 Difference]: Without dead ends: 70 [2022-02-23 18:00:15,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-23 18:00:15,534 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:15,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 158 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 18:00:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-02-23 18:00:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-02-23 18:00:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.135135135135135) internal successors, (42), 40 states have internal predecessors, (42), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 18:00:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2022-02-23 18:00:15,539 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 54 [2022-02-23 18:00:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:15,539 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2022-02-23 18:00:15,539 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) [2022-02-23 18:00:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2022-02-23 18:00:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-02-23 18:00:15,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 18:00:15,540 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] [2022-02-23 18:00:15,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 18:00:15,760 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 [2022-02-23 18:00:15,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 18:00:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 18:00:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1746772058, now seen corresponding path program 1 times [2022-02-23 18:00:15,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 18:00:15,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111297929] [2022-02-23 18:00:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 18:00:15,770 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 18:00:15,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496330655] [2022-02-23 18:00:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 18:00:15,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 18:00:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 18:00:15,772 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) [2022-02-23 18:00:15,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 18:00:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 18:00:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-23 18:00:15,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 18:00:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-02-23 18:00:15,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 18:00:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-02-23 18:00:16,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 18:00:16,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111297929] [2022-02-23 18:00:16,174 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 18:00:16,174 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496330655] [2022-02-23 18:00:16,174 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496330655] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 18:00:16,174 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 18:00:16,174 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-02-23 18:00:16,174 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073245016] [2022-02-23 18:00:16,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 18:00:16,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-23 18:00:16,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 18:00:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-23 18:00:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-23 18:00:16,176 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 8 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-02-23 18:00:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 18:00:16,227 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-02-23 18:00:16,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-23 18:00:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 8 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 61 [2022-02-23 18:00:16,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 18:00:16,228 INFO L225 Difference]: With dead ends: 34 [2022-02-23 18:00:16,228 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 18:00:16,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-23 18:00:16,229 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 18:00:16,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 111 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 18:00:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 18:00:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 18:00:16,229 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) [2022-02-23 18:00:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 18:00:16,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2022-02-23 18:00:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 18:00:16,230 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 18:00:16,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 8 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-02-23 18:00:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 18:00:16,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 18:00:16,232 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 18:00:16,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 18:00:16,448 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 [2022-02-23 18:00:16,451 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 18:00:16,452 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 18:00:16,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:00:16 BasicIcfg [2022-02-23 18:00:16,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 18:00:16,454 INFO L158 Benchmark]: Toolchain (without parser) took 6125.35ms. Allocated memory was 201.3MB in the beginning and 283.1MB in the end (delta: 81.8MB). Free memory was 150.6MB in the beginning and 206.0MB in the end (delta: -55.4MB). Peak memory consumption was 26.5MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory was 167.1MB in the beginning and 167.0MB in the end (delta: 133.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.04ms. Allocated memory is still 201.3MB. Free memory was 150.5MB in the beginning and 177.0MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: Boogie Preprocessor took 59.73ms. Allocated memory is still 201.3MB. Free memory was 177.0MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: RCFGBuilder took 339.78ms. Allocated memory is still 201.3MB. Free memory was 175.2MB in the beginning and 164.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: IcfgTransformer took 20.11ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 163.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,455 INFO L158 Benchmark]: TraceAbstraction took 5189.77ms. Allocated memory was 201.3MB in the beginning and 283.1MB in the end (delta: 81.8MB). Free memory was 163.0MB in the beginning and 206.0MB in the end (delta: -43.0MB). Peak memory consumption was 39.2MB. Max. memory is 8.0GB. [2022-02-23 18:00:16,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory was 167.1MB in the beginning and 167.0MB in the end (delta: 133.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 495.04ms. Allocated memory is still 201.3MB. Free memory was 150.5MB in the beginning and 177.0MB in the end (delta: -26.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.73ms. Allocated memory is still 201.3MB. Free memory was 177.0MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 339.78ms. Allocated memory is still 201.3MB. Free memory was 175.2MB in the beginning and 164.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 20.11ms. Allocated memory is still 201.3MB. Free memory was 164.7MB in the beginning and 163.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5189.77ms. Allocated memory was 201.3MB in the beginning and 283.1MB in the end (delta: 81.8MB). Free memory was 163.0MB in the beginning and 206.0MB in the end (delta: -43.0MB). Peak memory consumption was 39.2MB. 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: 5.1s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 124 mSDsluCounter, 1287 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1000 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 485 IncrementalHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 287 mSDtfsCounter, 485 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 529 GetRequests, 461 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 23 NumberOfNonLiveVariables, 919 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 454/504 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! [2022-02-23 18:00:16,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...