/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_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 06:42:57,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 06:42:57,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 06:42:57,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 06:42:57,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 06:42:57,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 06:42:57,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 06:42:57,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 06:42:57,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 06:42:57,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 06:42:57,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 06:42:57,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 06:42:57,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 06:42:57,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 06:42:57,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 06:42:57,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 06:42:57,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 06:42:57,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 06:42:57,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 06:42:57,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 06:42:57,859 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 06:42:57,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 06:42:57,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 06:42:57,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 06:42:57,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 06:42:57,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 06:42:57,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 06:42:57,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 06:42:57,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 06:42:57,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 06:42:57,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 06:42:57,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 06:42:57,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 06:42:57,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 06:42:57,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 06:42:57,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 06:42:57,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 06:42:57,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 06:42:57,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 06:42:57,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 06:42:57,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 06:42:57,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 06:42:57,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 06:42:57,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:42:57,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 06:42:57,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 06:42:57,900 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 06:42:57,900 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 06:42:58,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 06:42:58,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 06:42:58,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 06:42:58,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 06:42:58,101 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 06:42:58,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound20.c [2022-04-06 06:42:58,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ed3c3c9/d5561c2f3e2e488791d935b0c3f88384/FLAG4772d0ce4 [2022-04-06 06:42:58,552 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 06:42:58,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_valuebound20.c [2022-04-06 06:42:58,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ed3c3c9/d5561c2f3e2e488791d935b0c3f88384/FLAG4772d0ce4 [2022-04-06 06:42:58,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ed3c3c9/d5561c2f3e2e488791d935b0c3f88384 [2022-04-06 06:42:58,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 06:42:58,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 06:42:58,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 06:42:58,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 06:42:58,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 06:42:58,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ab502d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58, skipping insertion in model container [2022-04-06 06:42:58,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 06:42:58,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 06:42:58,746 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_valuebound20.c[489,502] [2022-04-06 06:42:58,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:42:58,770 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 06:42:58,779 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_valuebound20.c[489,502] [2022-04-06 06:42:58,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 06:42:58,795 INFO L208 MainTranslator]: Completed translation [2022-04-06 06:42:58,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58 WrapperNode [2022-04-06 06:42:58,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 06:42:58,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 06:42:58,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 06:42:58,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 06:42:58,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 06:42:58,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 06:42:58,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 06:42:58,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 06:42:58,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (1/1) ... [2022-04-06 06:42:58,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 06:42:58,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:42:58,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 06:42:58,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 06:42:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 06:42:58,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 06:42:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 06:42:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 06:42:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 06:42:58,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 06:42:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 06:42:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 06:42:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 06:42:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 06:42:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 06:42:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 06:42:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 06:42:58,938 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 06:42:58,939 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 06:42:59,061 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 06:42:59,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 06:42:59,066 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 06:42:59,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:42:59 BoogieIcfgContainer [2022-04-06 06:42:59,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 06:42:59,079 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 06:42:59,079 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 06:42:59,080 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 06:42:59,083 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:42:59" (1/1) ... [2022-04-06 06:42:59,085 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 06:42:59,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:42:59 BasicIcfg [2022-04-06 06:42:59,124 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 06:42:59,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 06:42:59,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 06:42:59,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 06:42:59,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 06:42:58" (1/4) ... [2022-04-06 06:42:59,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ae1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:42:59, skipping insertion in model container [2022-04-06 06:42:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 06:42:58" (2/4) ... [2022-04-06 06:42:59,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ae1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 06:42:59, skipping insertion in model container [2022-04-06 06:42:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 06:42:59" (3/4) ... [2022-04-06 06:42:59,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ae1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:42:59, skipping insertion in model container [2022-04-06 06:42:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 06:42:59" (4/4) ... [2022-04-06 06:42:59,130 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.cJordan [2022-04-06 06:42:59,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 06:42:59,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 06:42:59,174 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 06:42:59,183 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 06:42:59,183 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 06:42:59,201 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) [2022-04-06 06:42:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 06:42:59,218 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:42:59,218 INFO L499 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] [2022-04-06 06:42:59,219 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:42:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:42:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1381881312, now seen corresponding path program 1 times [2022-04-06 06:42:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:42:59,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146461903] [2022-04-06 06:42:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:42:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:42:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 06:42:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 06:42:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 06:42:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 06:42:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 06:42:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 06:42:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:42:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146461903] [2022-04-06 06:42:59,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146461903] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:42:59,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:42:59,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 06:42:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711578380] [2022-04-06 06:42:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:42:59,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 06:42:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:42:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 06:42:59,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 06:42:59,538 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) [2022-04-06 06:42:59,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:42:59,631 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2022-04-06 06:42:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 06:42:59,634 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 [2022-04-06 06:42:59,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:42:59,640 INFO L225 Difference]: With dead ends: 37 [2022-04-06 06:42:59,641 INFO L226 Difference]: Without dead ends: 32 [2022-04-06 06:42:59,642 INFO L912 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 [2022-04-06 06:42:59,647 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:42:59,648 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:42:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-06 06:42:59,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-06 06:42:59,682 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) [2022-04-06 06:42:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-04-06 06:42:59,686 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 33 [2022-04-06 06:42:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:42:59,686 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-04-06 06:42:59,687 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (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) [2022-04-06 06:42:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-04-06 06:42:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 06:42:59,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:42:59,695 INFO L499 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] [2022-04-06 06:42:59,695 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 06:42:59,695 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:42:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:42:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1975235811, now seen corresponding path program 1 times [2022-04-06 06:42:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:42:59,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609958911] [2022-04-06 06:42:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:42:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:42:59,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:42:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308219761] [2022-04-06 06:42:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:42:59,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:42:59,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:42:59,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:42:59,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 06:42:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:42:59,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 06:42:59,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:42:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 06:42:59,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:42:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:42:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609958911] [2022-04-06 06:42:59,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:42:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308219761] [2022-04-06 06:42:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308219761] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:42:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:42:59,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 06:42:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021413620] [2022-04-06 06:42:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:42:59,957 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:42:59,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:42:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:42:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 06:42:59,959 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) [2022-04-06 06:43:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:00,018 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2022-04-06 06:43:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:00,018 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 [2022-04-06 06:43:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:00,019 INFO L225 Difference]: With dead ends: 46 [2022-04-06 06:43:00,019 INFO L226 Difference]: Without dead ends: 46 [2022-04-06 06:43:00,020 INFO L912 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 [2022-04-06 06:43:00,021 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:00,021 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 143 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-06 06:43:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-04-06 06:43:00,029 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) [2022-04-06 06:43:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-04-06 06:43:00,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 33 [2022-04-06 06:43:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:00,033 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-04-06 06:43:00,034 INFO L479 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) [2022-04-06 06:43:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-04-06 06:43:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 06:43:00,035 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:00,035 INFO L499 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] [2022-04-06 06:43:00,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:00,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:00,252 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -759782395, now seen corresponding path program 1 times [2022-04-06 06:43:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:00,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737754069] [2022-04-06 06:43:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:00,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:00,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517832716] [2022-04-06 06:43:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:00,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:00,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 06:43:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:00,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 06:43:00,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 06:43:00,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:43:00,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:00,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737754069] [2022-04-06 06:43:00,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:00,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517832716] [2022-04-06 06:43:00,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517832716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:43:00,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:43:00,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 06:43:00,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726689134] [2022-04-06 06:43:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:43:00,506 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:43:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:43:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 06:43:00,508 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 06:43:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:00,560 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-04-06 06:43:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:00,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-04-06 06:43:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:00,562 INFO L225 Difference]: With dead ends: 50 [2022-04-06 06:43:00,562 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 06:43:00,563 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 06:43:00,564 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:00,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 06:43:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-04-06 06:43:00,571 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) [2022-04-06 06:43:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-04-06 06:43:00,572 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 38 [2022-04-06 06:43:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:00,573 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-04-06 06:43:00,573 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-04-06 06:43:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-04-06 06:43:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-06 06:43:00,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:00,574 INFO L499 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] [2022-04-06 06:43:00,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:00,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 06:43:00,792 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:00,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1840397536, now seen corresponding path program 1 times [2022-04-06 06:43:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:00,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329841097] [2022-04-06 06:43:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:00,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:00,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998983248] [2022-04-06 06:43:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:00,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:00,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:00,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 06:43:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:00,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 06:43:00,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 06:43:01,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:43:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 06:43:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:01,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329841097] [2022-04-06 06:43:01,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:01,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998983248] [2022-04-06 06:43:01,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998983248] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 06:43:01,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:43:01,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-06 06:43:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714455562] [2022-04-06 06:43:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:43:01,296 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:43:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:43:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-04-06 06:43:01,297 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:43:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:01,346 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-04-06 06:43:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-06 06:43:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:01,349 INFO L225 Difference]: With dead ends: 72 [2022-04-06 06:43:01,349 INFO L226 Difference]: Without dead ends: 70 [2022-04-06 06:43:01,350 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-04-06 06:43:01,350 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:01,351 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 137 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-04-06 06:43:01,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-04-06 06:43:01,363 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) [2022-04-06 06:43:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2022-04-06 06:43:01,365 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 43 [2022-04-06 06:43:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:01,365 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2022-04-06 06:43:01,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 06:43:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2022-04-06 06:43:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-06 06:43:01,367 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:01,367 INFO L499 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] [2022-04-06 06:43:01,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-06 06:43:01,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:01,572 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1590647429, now seen corresponding path program 1 times [2022-04-06 06:43:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:01,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996850803] [2022-04-06 06:43:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:01,590 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:01,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135238594] [2022-04-06 06:43:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:01,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:01,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:01,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:01,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 06:43:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:01,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 06:43:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 06:43:01,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:43:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996850803] [2022-04-06 06:43:01,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135238594] [2022-04-06 06:43:01,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135238594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:43:01,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:43:01,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 06:43:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800734764] [2022-04-06 06:43:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:43:01,747 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:43:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:43:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 06:43:01,748 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) [2022-04-06 06:43:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:01,785 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2022-04-06 06:43:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:01,786 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 [2022-04-06 06:43:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:01,787 INFO L225 Difference]: With dead ends: 74 [2022-04-06 06:43:01,787 INFO L226 Difference]: Without dead ends: 74 [2022-04-06 06:43:01,788 INFO L912 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 [2022-04-06 06:43:01,788 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:01,789 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 139 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-06 06:43:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-04-06 06:43:01,796 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) [2022-04-06 06:43:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2022-04-06 06:43:01,797 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 49 [2022-04-06 06:43:01,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:01,798 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2022-04-06 06:43:01,798 INFO L479 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) [2022-04-06 06:43:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2022-04-06 06:43:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 06:43:01,799 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:01,799 INFO L499 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] [2022-04-06 06:43:01,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:02,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:02,026 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1737902154, now seen corresponding path program 1 times [2022-04-06 06:43:02,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:02,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896630216] [2022-04-06 06:43:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:02,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:02,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:02,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458276454] [2022-04-06 06:43:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:02,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:02,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:02,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:02,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 06:43:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:02,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-06 06:43:02,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-04-06 06:43:02,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 06:43:02,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:02,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896630216] [2022-04-06 06:43:02,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:02,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458276454] [2022-04-06 06:43:02,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458276454] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 06:43:02,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 06:43:02,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 06:43:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644454015] [2022-04-06 06:43:02,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:43:02,239 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:43:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:43:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 06:43:02,240 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 06:43:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:02,276 INFO L93 Difference]: Finished difference Result 82 states and 107 transitions. [2022-04-06 06:43:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-04-06 06:43:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:02,280 INFO L225 Difference]: With dead ends: 82 [2022-04-06 06:43:02,280 INFO L226 Difference]: Without dead ends: 81 [2022-04-06 06:43:02,281 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 06:43:02,283 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:02,283 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-04-06 06:43:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-04-06 06:43:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-04-06 06:43:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-04-06 06:43:02,294 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 51 [2022-04-06 06:43:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:02,295 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-04-06 06:43:02,295 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 06:43:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-04-06 06:43:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 06:43:02,296 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:02,296 INFO L499 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] [2022-04-06 06:43:02,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:02,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:02,508 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1046589490, now seen corresponding path program 1 times [2022-04-06 06:43:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371708016] [2022-04-06 06:43:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:02,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:02,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751801490] [2022-04-06 06:43:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:02,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:02,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:02,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:02,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 06:43:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:02,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-06 06:43:02,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-06 06:43:02,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:43:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-04-06 06:43:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:02,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371708016] [2022-04-06 06:43:02,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:02,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751801490] [2022-04-06 06:43:02,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751801490] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:43:02,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:43:02,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 06:43:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706031832] [2022-04-06 06:43:02,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:43:02,840 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 06:43:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 06:43:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 06:43:02,841 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-06 06:43:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:02,960 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2022-04-06 06:43:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 06:43:02,960 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 [2022-04-06 06:43:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:02,964 INFO L225 Difference]: With dead ends: 86 [2022-04-06 06:43:02,964 INFO L226 Difference]: Without dead ends: 84 [2022-04-06 06:43:02,964 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 06:43:02,967 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:02,967 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 110 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 06:43:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-04-06 06:43:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-04-06 06:43:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 27 states have call successors, (27), 11 states have call predecessors, (27), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 06:43:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 105 transitions. [2022-04-06 06:43:02,980 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 105 transitions. Word has length 54 [2022-04-06 06:43:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:02,981 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 105 transitions. [2022-04-06 06:43:02,981 INFO L479 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) [2022-04-06 06:43:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 105 transitions. [2022-04-06 06:43:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 06:43:02,982 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:02,982 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:43:03,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-06 06:43:03,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:03,188 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2126309122, now seen corresponding path program 2 times [2022-04-06 06:43:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:03,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055904861] [2022-04-06 06:43:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:03,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:03,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502912114] [2022-04-06 06:43:03,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 06:43:03,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:03,201 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) [2022-04-06 06:43:03,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 06:43:03,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 06:43:03,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 06:43:03,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 06:43:03,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 06:43:03,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:43:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 06:43:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055904861] [2022-04-06 06:43:03,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502912114] [2022-04-06 06:43:03,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502912114] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 06:43:03,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 06:43:03,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-04-06 06:43:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176057478] [2022-04-06 06:43:03,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 06:43:03,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 06:43:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 06:43:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-06 06:43:03,600 INFO L87 Difference]: Start difference. First operand 84 states and 105 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 06:43:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:04,147 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-04-06 06:43:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 06:43:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 56 [2022-04-06 06:43:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:04,152 INFO L225 Difference]: With dead ends: 108 [2022-04-06 06:43:04,152 INFO L226 Difference]: Without dead ends: 103 [2022-04-06 06:43:04,153 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-04-06 06:43:04,153 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:04,154 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 06:43:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-04-06 06:43:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 88. [2022-04-06 06:43:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 06:43:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2022-04-06 06:43:04,161 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 56 [2022-04-06 06:43:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:04,161 INFO L478 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2022-04-06 06:43:04,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 06:43:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2022-04-06 06:43:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 06:43:04,163 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 06:43:04,163 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:43:04,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:04,381 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:04,382 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 06:43:04,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 06:43:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash -296466288, now seen corresponding path program 1 times [2022-04-06 06:43:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 06:43:04,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250651906] [2022-04-06 06:43:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 06:43:04,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 06:43:04,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78021580] [2022-04-06 06:43:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 06:43:04,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 06:43:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 06:43:04,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 06:43:04,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 06:43:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 06:43:04,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 06:43:04,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 06:43:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-04-06 06:43:04,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 06:43:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-04-06 06:43:04,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 06:43:04,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250651906] [2022-04-06 06:43:04,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 06:43:04,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78021580] [2022-04-06 06:43:04,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78021580] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 06:43:04,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 06:43:04,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-04-06 06:43:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997793268] [2022-04-06 06:43:04,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 06:43:04,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 06:43:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 06:43:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 06:43:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-04-06 06:43:04,825 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 06:43:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 06:43:04,863 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2022-04-06 06:43:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 06:43:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2022-04-06 06:43:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 06:43:04,864 INFO L225 Difference]: With dead ends: 86 [2022-04-06 06:43:04,864 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 06:43:04,864 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 06:43:04,866 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 06:43:04,867 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 06:43:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 06:43:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 06:43:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 06:43:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 06:43:04,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2022-04-06 06:43:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 06:43:04,868 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 06:43:04,868 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-04-06 06:43:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 06:43:04,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 06:43:04,870 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 06:43:04,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 06:43:05,083 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-06 06:43:05,087 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 06:43:05,088 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 06:43:05,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 06:43:05 BasicIcfg [2022-04-06 06:43:05,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 06:43:05,091 INFO L158 Benchmark]: Toolchain (without parser) took 6521.05ms. Allocated memory was 185.6MB in the beginning and 257.9MB in the end (delta: 72.4MB). Free memory was 134.8MB in the beginning and 156.9MB in the end (delta: -22.1MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,091 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 151.6MB in the beginning and 151.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 06:43:05,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.15ms. Allocated memory is still 185.6MB. Free memory was 134.6MB in the beginning and 159.7MB in the end (delta: -25.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,091 INFO L158 Benchmark]: Boogie Preprocessor took 24.88ms. Allocated memory is still 185.6MB. Free memory was 159.7MB in the beginning and 158.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,092 INFO L158 Benchmark]: RCFGBuilder took 245.52ms. Allocated memory is still 185.6MB. Free memory was 158.1MB in the beginning and 147.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,092 INFO L158 Benchmark]: IcfgTransformer took 45.23ms. Allocated memory is still 185.6MB. Free memory was 147.6MB in the beginning and 146.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,092 INFO L158 Benchmark]: TraceAbstraction took 5964.99ms. Allocated memory was 185.6MB in the beginning and 257.9MB in the end (delta: 72.4MB). Free memory was 145.5MB in the beginning and 156.9MB in the end (delta: -11.4MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. [2022-04-06 06:43:05,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 185.6MB. Free memory was 151.6MB in the beginning and 151.5MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.15ms. Allocated memory is still 185.6MB. Free memory was 134.6MB in the beginning and 159.7MB in the end (delta: -25.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.88ms. Allocated memory is still 185.6MB. Free memory was 159.7MB in the beginning and 158.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 245.52ms. Allocated memory is still 185.6MB. Free memory was 158.1MB in the beginning and 147.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 45.23ms. Allocated memory is still 185.6MB. Free memory was 147.6MB in the beginning and 146.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 5964.99ms. Allocated memory was 185.6MB in the beginning and 257.9MB in the end (delta: 72.4MB). Free memory was 145.5MB in the beginning and 156.9MB in the end (delta: -11.4MB). Peak memory consumption was 61.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 5.9s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 1101 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 743 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 506 IncrementalHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 358 mSDtfsCounter, 506 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 576 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 48, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 426 NumberOfCodeBlocks, 426 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 1676 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1087 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 627/666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 06:43:05,120 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...