/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/egcd2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 16:51:44,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 16:51:44,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 16:51:44,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 16:51:44,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 16:51:44,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 16:51:44,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 16:51:44,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 16:51:44,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 16:51:44,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 16:51:44,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 16:51:44,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 16:51:44,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 16:51:44,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 16:51:44,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 16:51:44,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 16:51:44,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 16:51:44,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 16:51:44,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 16:51:44,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 16:51:44,906 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 16:51:44,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 16:51:44,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 16:51:44,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 16:51:44,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 16:51:44,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 16:51:44,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 16:51:44,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 16:51:44,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 16:51:44,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 16:51:44,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 16:51:44,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 16:51:44,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 16:51:44,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 16:51:44,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 16:51:44,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 16:51:44,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 16:51:44,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 16:51:44,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 16:51:44,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 16:51:44,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 16:51:44,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 16:51:44,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 16:51:44,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 16:51:44,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 16:51:44,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 16:51:44,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 16:51:44,933 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 16:51:44,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 16:51:45,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 16:51:45,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 16:51:45,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 16:51:45,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 16:51:45,159 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 16:51:45,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2022-03-17 16:51:45,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcf68137/09fee1aaa9734e1bbc86de17a147cb5e/FLAG7014181e8 [2022-03-17 16:51:45,581 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 16:51:45,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2022-03-17 16:51:45,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcf68137/09fee1aaa9734e1bbc86de17a147cb5e/FLAG7014181e8 [2022-03-17 16:51:45,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcf68137/09fee1aaa9734e1bbc86de17a147cb5e [2022-03-17 16:51:45,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 16:51:45,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 16:51:45,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 16:51:45,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 16:51:45,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 16:51:45,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40749816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45, skipping insertion in model container [2022-03-17 16:51:45,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 16:51:45,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 16:51:45,760 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/egcd2-ll_unwindbound10.c[490,503] [2022-03-17 16:51:45,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 16:51:45,798 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 16:51:45,807 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/egcd2-ll_unwindbound10.c[490,503] [2022-03-17 16:51:45,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 16:51:45,824 INFO L208 MainTranslator]: Completed translation [2022-03-17 16:51:45,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45 WrapperNode [2022-03-17 16:51:45,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 16:51:45,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 16:51:45,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 16:51:45,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 16:51:45,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 16:51:45,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 16:51:45,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 16:51:45,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 16:51:45,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (1/1) ... [2022-03-17 16:51:45,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 16:51:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:45,871 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) [2022-03-17 16:51:45,877 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 [2022-03-17 16:51:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 16:51:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 16:51:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 16:51:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 16:51:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 16:51:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 16:51:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 16:51:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 16:51:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 16:51:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 16:51:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 16:51:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 16:51:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 16:51:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 16:51:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 16:51:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 16:51:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 16:51:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 16:51:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 16:51:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 16:51:45,958 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 16:51:45,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 16:51:46,115 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 16:51:46,120 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 16:51:46,121 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-17 16:51:46,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 04:51:46 BoogieIcfgContainer [2022-03-17 16:51:46,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 16:51:46,131 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 16:51:46,132 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 16:51:46,133 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 16:51:46,135 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 04:51:46" (1/1) ... [2022-03-17 16:51:46,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 04:51:46 BasicIcfg [2022-03-17 16:51:46,149 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 16:51:46,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 16:51:46,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 16:51:46,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 16:51:46,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:51:45" (1/4) ... [2022-03-17 16:51:46,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4e7266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:51:46, skipping insertion in model container [2022-03-17 16:51:46,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:51:45" (2/4) ... [2022-03-17 16:51:46,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4e7266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:51:46, skipping insertion in model container [2022-03-17 16:51:46,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 04:51:46" (3/4) ... [2022-03-17 16:51:46,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4e7266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 04:51:46, skipping insertion in model container [2022-03-17 16:51:46,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 04:51:46" (4/4) ... [2022-03-17 16:51:46,154 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.cJordan [2022-03-17 16:51:46,158 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 16:51:46,158 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 16:51:46,224 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 16:51:46,229 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 [2022-03-17 16:51:46,229 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 16:51:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-17 16:51:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-17 16:51:46,252 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:46,253 INFO L500 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] [2022-03-17 16:51:46,254 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash -282167495, now seen corresponding path program 1 times [2022-03-17 16:51:46,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:46,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012511690] [2022-03-17 16:51:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:46,356 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:46,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588142160] [2022-03-17 16:51:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:46,358 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) [2022-03-17 16:51:46,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 16:51:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:46,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core [2022-03-17 16:51:46,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 16:51:46,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 16:51:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:46,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012511690] [2022-03-17 16:51:46,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:46,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588142160] [2022-03-17 16:51:46,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588142160] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 16:51:46,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 16:51:46,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-17 16:51:46,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510047731] [2022-03-17 16:51:46,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:46,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-17 16:51:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-17 16:51:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-17 16:51:46,536 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-03-17 16:51:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:46,553 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-03-17 16:51:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-17 16:51:46,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 32 [2022-03-17 16:51:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:46,561 INFO L225 Difference]: With dead ends: 39 [2022-03-17 16:51:46,561 INFO L226 Difference]: Without dead ends: 34 [2022-03-17 16:51:46,563 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-17 16:51:46,566 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:46,568 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-17 16:51:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-17 16:51:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 16:51:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-03-17 16:51:46,602 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2022-03-17 16:51:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:46,603 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-03-17 16:51:46,604 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-03-17 16:51:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-03-17 16:51:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-17 16:51:46,605 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:46,605 INFO L500 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] [2022-03-17 16:51:46,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:46,808 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-17 16:51:46,809 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash -127828113, now seen corresponding path program 1 times [2022-03-17 16:51:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890215947] [2022-03-17 16:51:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:46,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:46,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253620751] [2022-03-17 16:51:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:46,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:46,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:46,827 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) [2022-03-17 16:51:46,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 16:51:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:46,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-17 16:51:46,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 16:51:47,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 16:51:47,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:47,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890215947] [2022-03-17 16:51:47,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253620751] [2022-03-17 16:51:47,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253620751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 16:51:47,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 16:51:47,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 16:51:47,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190958603] [2022-03-17 16:51:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:47,027 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-17 16:51:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-17 16:51:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 16:51:47,033 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:47,061 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-03-17 16:51:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-17 16:51:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-17 16:51:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:47,063 INFO L225 Difference]: With dead ends: 36 [2022-03-17 16:51:47,063 INFO L226 Difference]: Without dead ends: 36 [2022-03-17 16:51:47,064 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-17 16:51:47,064 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:47,065 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-17 16:51:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-17 16:51:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 16:51:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-03-17 16:51:47,074 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33 [2022-03-17 16:51:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:47,074 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-03-17 16:51:47,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-03-17 16:51:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-17 16:51:47,075 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:47,075 INFO L500 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, 1] [2022-03-17 16:51:47,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:47,275 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,SelfDestructingSolverStorable1 [2022-03-17 16:51:47,276 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:47,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash 365419517, now seen corresponding path program 1 times [2022-03-17 16:51:47,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:47,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002932034] [2022-03-17 16:51:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:47,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:47,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:47,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005782375] [2022-03-17 16:51:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:47,293 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) [2022-03-17 16:51:47,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 16:51:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:47,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 16:51:47,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-17 16:51:47,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-17 16:51:47,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:47,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002932034] [2022-03-17 16:51:47,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:47,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005782375] [2022-03-17 16:51:47,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005782375] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:47,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:47,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-17 16:51:47,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754070137] [2022-03-17 16:51:47,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:47,576 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 16:51:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 16:51:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 16:51:47,577 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:47,649 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-03-17 16:51:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 16:51:47,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-03-17 16:51:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:47,651 INFO L225 Difference]: With dead ends: 45 [2022-03-17 16:51:47,651 INFO L226 Difference]: Without dead ends: 45 [2022-03-17 16:51:47,651 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-17 16:51:47,652 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:47,652 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 127 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-17 16:51:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-03-17 16:51:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 16:51:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-17 16:51:47,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34 [2022-03-17 16:51:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:47,657 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-17 16:51:47,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-17 16:51:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-17 16:51:47,658 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:47,658 INFO L500 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, 1, 1, 1] [2022-03-17 16:51:47,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:47,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:47,872 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash 196514290, now seen corresponding path program 1 times [2022-03-17 16:51:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:47,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746275428] [2022-03-17 16:51:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:47,884 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:47,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913726585] [2022-03-17 16:51:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:47,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:47,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:47,885 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) [2022-03-17 16:51:47,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 16:51:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:47,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-17 16:51:47,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-17 16:51:48,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 16:51:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746275428] [2022-03-17 16:51:48,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913726585] [2022-03-17 16:51:48,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913726585] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 16:51:48,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:51:48,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-17 16:51:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524704117] [2022-03-17 16:51:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:48,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 16:51:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 16:51:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-17 16:51:48,118 INFO L87 Difference]: Start difference. First operand 37 states and 48 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, (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) [2022-03-17 16:51:48,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:48,151 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-03-17 16:51:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 16:51:48,151 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, (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 36 [2022-03-17 16:51:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:48,152 INFO L225 Difference]: With dead ends: 41 [2022-03-17 16:51:48,152 INFO L226 Difference]: Without dead ends: 41 [2022-03-17 16:51:48,152 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-17 16:51:48,153 INFO L912 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:48,153 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-17 16:51:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-17 16:51:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 16:51:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-17 16:51:48,157 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2022-03-17 16:51:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:48,157 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-17 16:51:48,158 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, (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) [2022-03-17 16:51:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-17 16:51:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 16:51:48,158 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:48,158 INFO L500 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, 1] [2022-03-17 16:51:48,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:48,371 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:48,372 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash 56558454, now seen corresponding path program 1 times [2022-03-17 16:51:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:48,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874072701] [2022-03-17 16:51:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:48,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890673140] [2022-03-17 16:51:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:48,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:48,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:48,385 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) [2022-03-17 16:51:48,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 16:51:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:48,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 16:51:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 16:51:48,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 16:51:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874072701] [2022-03-17 16:51:48,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:48,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890673140] [2022-03-17 16:51:48,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890673140] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 16:51:48,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 16:51:48,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 16:51:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716173618] [2022-03-17 16:51:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:48,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 16:51:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 16:51:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 16:51:48,516 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:48,542 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-03-17 16:51:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 16:51:48,543 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-17 16:51:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:48,545 INFO L225 Difference]: With dead ends: 43 [2022-03-17 16:51:48,545 INFO L226 Difference]: Without dead ends: 43 [2022-03-17 16:51:48,545 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 16:51:48,547 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:48,547 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-17 16:51:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-17 16:51:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-17 16:51:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-03-17 16:51:48,551 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 39 [2022-03-17 16:51:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:48,551 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-03-17 16:51:48,551 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 16:51:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-03-17 16:51:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-17 16:51:48,552 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:48,552 INFO L500 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, 1, 1, 1] [2022-03-17 16:51:48,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:48,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:48,764 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash 578094295, now seen corresponding path program 1 times [2022-03-17 16:51:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:48,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743237042] [2022-03-17 16:51:48,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:48,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:48,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036421251] [2022-03-17 16:51:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:48,774 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) [2022-03-17 16:51:48,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 16:51:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:48,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-17 16:51:48,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-17 16:51:48,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 16:51:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:49,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743237042] [2022-03-17 16:51:49,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:49,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036421251] [2022-03-17 16:51:49,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036421251] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 16:51:49,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:51:49,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-03-17 16:51:49,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62770465] [2022-03-17 16:51:49,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:49,033 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 16:51:49,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 16:51:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-17 16:51:49,034 INFO L87 Difference]: Start difference. First operand 43 states and 53 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, (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) [2022-03-17 16:51:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:49,060 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-03-17 16:51:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 16:51:49,061 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, (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 41 [2022-03-17 16:51:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:49,062 INFO L225 Difference]: With dead ends: 55 [2022-03-17 16:51:49,062 INFO L226 Difference]: Without dead ends: 55 [2022-03-17 16:51:49,062 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-17 16:51:49,063 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:49,063 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:49,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-17 16:51:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-03-17 16:51:49,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 16:51:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-03-17 16:51:49,067 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2022-03-17 16:51:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:49,068 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-03-17 16:51:49,068 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, (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) [2022-03-17 16:51:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-03-17 16:51:49,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 16:51:49,068 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:49,068 INFO L500 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, 1, 1, 1] [2022-03-17 16:51:49,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:49,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:49,288 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1581112078, now seen corresponding path program 1 times [2022-03-17 16:51:49,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:49,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907473189] [2022-03-17 16:51:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:49,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:49,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871297694] [2022-03-17 16:51:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:49,301 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) [2022-03-17 16:51:49,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-17 16:51:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-17 16:51:49,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-17 16:51:49,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-17 16:51:49,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:49,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907473189] [2022-03-17 16:51:49,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:49,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871297694] [2022-03-17 16:51:49,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871297694] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 16:51:49,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:51:49,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-03-17 16:51:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274043285] [2022-03-17 16:51:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:51:49,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 16:51:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 16:51:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-17 16:51:49,600 INFO L87 Difference]: Start difference. First operand 54 states and 69 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, (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) [2022-03-17 16:51:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:49,630 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-03-17 16:51:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 16:51:49,631 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, (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 46 [2022-03-17 16:51:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:49,631 INFO L225 Difference]: With dead ends: 59 [2022-03-17 16:51:49,631 INFO L226 Difference]: Without dead ends: 59 [2022-03-17 16:51:49,632 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-17 16:51:49,632 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:49,632 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:51:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-17 16:51:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-03-17 16:51:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 16:51:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-03-17 16:51:49,637 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 46 [2022-03-17 16:51:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:49,637 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-03-17 16:51:49,637 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, (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) [2022-03-17 16:51:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-03-17 16:51:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 16:51:49,638 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:49,638 INFO L500 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, 1, 1] [2022-03-17 16:51:49,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:49,845 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:49,846 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:49,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1942645143, now seen corresponding path program 1 times [2022-03-17 16:51:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:49,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246595014] [2022-03-17 16:51:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:49,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:49,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707786470] [2022-03-17 16:51:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:49,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:49,862 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) [2022-03-17 16:51:49,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-17 16:51:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:49,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-17 16:51:49,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-17 16:51:50,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246595014] [2022-03-17 16:51:50,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707786470] [2022-03-17 16:51:50,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707786470] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 16:51:50,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:51:50,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-17 16:51:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695050237] [2022-03-17 16:51:50,214 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:50,215 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 16:51:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 16:51:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-17 16:51:50,215 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 16:51:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:50,344 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-03-17 16:51:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 16:51:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-03-17 16:51:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:50,346 INFO L225 Difference]: With dead ends: 63 [2022-03-17 16:51:50,346 INFO L226 Difference]: Without dead ends: 63 [2022-03-17 16:51:50,346 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-17 16:51:50,346 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:50,346 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 190 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 16:51:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-17 16:51:50,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-03-17 16:51:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-17 16:51:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-03-17 16:51:50,350 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2022-03-17 16:51:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:50,351 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-03-17 16:51:50,351 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-17 16:51:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-03-17 16:51:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-17 16:51:50,351 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:50,351 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:50,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:50,565 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,SelfDestructingSolverStorable7 [2022-03-17 16:51:50,566 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1573186588, now seen corresponding path program 1 times [2022-03-17 16:51:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:50,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778969000] [2022-03-17 16:51:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:50,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361246268] [2022-03-17 16:51:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:50,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:50,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-17 16:51:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:50,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 16:51:50,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-17 16:51:50,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-17 16:51:50,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:50,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778969000] [2022-03-17 16:51:50,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361246268] [2022-03-17 16:51:50,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361246268] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:50,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:50,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-03-17 16:51:50,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361894086] [2022-03-17 16:51:50,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:50,830 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 16:51:50,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:50,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 16:51:50,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-17 16:51:50,831 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-17 16:51:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:50,947 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2022-03-17 16:51:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 16:51:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 60 [2022-03-17 16:51:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:50,951 INFO L225 Difference]: With dead ends: 207 [2022-03-17 16:51:50,951 INFO L226 Difference]: Without dead ends: 207 [2022-03-17 16:51:50,952 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-17 16:51:50,953 INFO L912 BasicCegarLoop]: 61 mSDtfsCounter, 119 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:50,953 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 264 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 16:51:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-03-17 16:51:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2022-03-17 16:51:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 130 states have internal predecessors, (150), 46 states have call successors, (46), 27 states have call predecessors, (46), 26 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-17 16:51:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 237 transitions. [2022-03-17 16:51:50,983 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 237 transitions. Word has length 60 [2022-03-17 16:51:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:50,984 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 237 transitions. [2022-03-17 16:51:50,984 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-17 16:51:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 237 transitions. [2022-03-17 16:51:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-17 16:51:50,986 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:50,986 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:51,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:51,193 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:51,193 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1491020248, now seen corresponding path program 1 times [2022-03-17 16:51:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:51,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380160271] [2022-03-17 16:51:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:51,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:51,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960780353] [2022-03-17 16:51:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:51,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:51,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:51,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:51,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-17 16:51:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:51,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 16:51:51,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-17 16:51:51,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-17 16:51:51,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380160271] [2022-03-17 16:51:51,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:51,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960780353] [2022-03-17 16:51:51,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960780353] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:51,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:51,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-17 16:51:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478469620] [2022-03-17 16:51:51,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:51,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 16:51:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 16:51:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-17 16:51:51,457 INFO L87 Difference]: Start difference. First operand 199 states and 237 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-17 16:51:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:51,606 INFO L93 Difference]: Finished difference Result 263 states and 342 transitions. [2022-03-17 16:51:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 16:51:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-03-17 16:51:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:51,607 INFO L225 Difference]: With dead ends: 263 [2022-03-17 16:51:51,607 INFO L226 Difference]: Without dead ends: 263 [2022-03-17 16:51:51,608 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-17 16:51:51,608 INFO L912 BasicCegarLoop]: 70 mSDtfsCounter, 62 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:51,608 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 387 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 16:51:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-17 16:51:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 239. [2022-03-17 16:51:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.2222222222222223) internal successors, (187), 156 states have internal predecessors, (187), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-17 16:51:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2022-03-17 16:51:51,616 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 61 [2022-03-17 16:51:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:51,617 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2022-03-17 16:51:51,617 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-17 16:51:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2022-03-17 16:51:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-17 16:51:51,618 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:51,618 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:51,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:51,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-17 16:51:51,835 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 317217743, now seen corresponding path program 1 times [2022-03-17 16:51:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:51,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195300928] [2022-03-17 16:51:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:51,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:51,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:51,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821631539] [2022-03-17 16:51:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:51,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:51,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:51,844 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:51,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-17 16:51:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:51,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 16:51:51,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-17 16:51:51,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-17 16:51:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195300928] [2022-03-17 16:51:52,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:52,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821631539] [2022-03-17 16:51:52,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821631539] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:52,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:52,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-03-17 16:51:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866760440] [2022-03-17 16:51:52,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:52,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 16:51:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 16:51:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-17 16:51:52,117 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-17 16:51:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:52,231 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2022-03-17 16:51:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 16:51:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 63 [2022-03-17 16:51:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:52,233 INFO L225 Difference]: With dead ends: 252 [2022-03-17 16:51:52,233 INFO L226 Difference]: Without dead ends: 252 [2022-03-17 16:51:52,233 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-17 16:51:52,234 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:52,234 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 266 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 16:51:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-03-17 16:51:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-03-17 16:51:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 165 states have internal predecessors, (190), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-17 16:51:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 306 transitions. [2022-03-17 16:51:52,241 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 306 transitions. Word has length 63 [2022-03-17 16:51:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:52,241 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 306 transitions. [2022-03-17 16:51:52,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-17 16:51:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 306 transitions. [2022-03-17 16:51:52,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 16:51:52,242 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:52,242 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:52,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-17 16:51:52,455 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-17 16:51:52,456 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash 918639692, now seen corresponding path program 1 times [2022-03-17 16:51:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:52,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636157707] [2022-03-17 16:51:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:52,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:52,463 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:52,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914143798] [2022-03-17 16:51:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:52,464 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:52,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-17 16:51:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-17 16:51:52,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-17 16:51:52,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-17 16:51:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:52,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636157707] [2022-03-17 16:51:52,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:52,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914143798] [2022-03-17 16:51:52,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914143798] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:52,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:52,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-03-17 16:51:52,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428371696] [2022-03-17 16:51:52,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:52,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 16:51:52,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 16:51:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-17 16:51:52,883 INFO L87 Difference]: Start difference. First operand 248 states and 306 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-17 16:51:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:53,206 INFO L93 Difference]: Finished difference Result 332 states and 429 transitions. [2022-03-17 16:51:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 16:51:53,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2022-03-17 16:51:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:53,209 INFO L225 Difference]: With dead ends: 332 [2022-03-17 16:51:53,209 INFO L226 Difference]: Without dead ends: 328 [2022-03-17 16:51:53,209 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-17 16:51:53,209 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:53,210 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 395 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 16:51:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-17 16:51:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 295. [2022-03-17 16:51:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 195 states have (on average 1.1948717948717948) internal successors, (233), 204 states have internal predecessors, (233), 71 states have call successors, (71), 29 states have call predecessors, (71), 28 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-17 16:51:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2022-03-17 16:51:53,218 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 68 [2022-03-17 16:51:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:53,218 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2022-03-17 16:51:53,218 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-17 16:51:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2022-03-17 16:51:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 16:51:53,219 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:53,219 INFO L500 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:53,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:53,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-17 16:51:53,441 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -210356579, now seen corresponding path program 2 times [2022-03-17 16:51:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:53,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160293532] [2022-03-17 16:51:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:53,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:53,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747950874] [2022-03-17 16:51:53,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 16:51:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:53,449 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:53,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-17 16:51:53,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 16:51:53,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:51:53,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-17 16:51:53,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-17 16:51:53,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-17 16:51:54,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160293532] [2022-03-17 16:51:54,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:54,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747950874] [2022-03-17 16:51:54,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747950874] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:54,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:54,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-03-17 16:51:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292074005] [2022-03-17 16:51:54,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:54,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 16:51:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 16:51:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-17 16:51:54,140 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-03-17 16:51:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:55,289 INFO L93 Difference]: Finished difference Result 317 states and 395 transitions. [2022-03-17 16:51:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 16:51:55,290 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) Word has length 73 [2022-03-17 16:51:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:55,291 INFO L225 Difference]: With dead ends: 317 [2022-03-17 16:51:55,291 INFO L226 Difference]: Without dead ends: 316 [2022-03-17 16:51:55,291 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-03-17 16:51:55,292 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:55,292 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 351 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 16:51:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-17 16:51:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 305. [2022-03-17 16:51:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 204 states have (on average 1.1862745098039216) internal successors, (242), 212 states have internal predecessors, (242), 69 states have call successors, (69), 32 states have call predecessors, (69), 31 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-17 16:51:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 376 transitions. [2022-03-17 16:51:55,304 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 376 transitions. Word has length 73 [2022-03-17 16:51:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:55,304 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 376 transitions. [2022-03-17 16:51:55,304 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-03-17 16:51:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 376 transitions. [2022-03-17 16:51:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-17 16:51:55,305 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:55,305 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:55,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:55,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-17 16:51:55,518 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash 952478412, now seen corresponding path program 3 times [2022-03-17 16:51:55,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:55,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443989872] [2022-03-17 16:51:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:55,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:55,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882029920] [2022-03-17 16:51:55,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 16:51:55,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:55,530 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:55,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-17 16:51:55,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-17 16:51:55,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:51:55,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-17 16:51:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-03-17 16:51:56,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:56,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:56,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443989872] [2022-03-17 16:51:56,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:56,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882029920] [2022-03-17 16:51:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882029920] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 16:51:56,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:51:56,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-17 16:51:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631375513] [2022-03-17 16:51:56,093 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:56,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 16:51:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 16:51:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-17 16:51:56,094 INFO L87 Difference]: Start difference. First operand 305 states and 376 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-17 16:51:56,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:51:56,496 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2022-03-17 16:51:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 16:51:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 78 [2022-03-17 16:51:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:51:56,498 INFO L225 Difference]: With dead ends: 335 [2022-03-17 16:51:56,498 INFO L226 Difference]: Without dead ends: 333 [2022-03-17 16:51:56,498 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-17 16:51:56,499 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 16:51:56,499 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 249 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 16:51:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-03-17 16:51:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2022-03-17 16:51:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 221 states have (on average 1.1764705882352942) internal successors, (260), 228 states have internal predecessors, (260), 73 states have call successors, (73), 37 states have call predecessors, (73), 35 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-17 16:51:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 402 transitions. [2022-03-17 16:51:56,506 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 402 transitions. Word has length 78 [2022-03-17 16:51:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:51:56,507 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 402 transitions. [2022-03-17 16:51:56,507 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-17 16:51:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 402 transitions. [2022-03-17 16:51:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-17 16:51:56,507 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:51:56,507 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:51:56,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-17 16:51:56,725 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:56,725 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:51:56,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:51:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 900405455, now seen corresponding path program 1 times [2022-03-17 16:51:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:51:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522602572] [2022-03-17 16:51:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:51:56,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:51:56,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443240322] [2022-03-17 16:51:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:51:56,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:51:56,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:51:56,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:51:56,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-17 16:51:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:51:56,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-17 16:51:56,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:51:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-17 16:51:57,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:51:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-17 16:51:57,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:51:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522602572] [2022-03-17 16:51:57,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:51:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443240322] [2022-03-17 16:51:57,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443240322] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:51:57,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:51:57,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-03-17 16:51:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334106727] [2022-03-17 16:51:57,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:51:57,785 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-17 16:51:57,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:51:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-17 16:51:57,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-17 16:51:57,786 INFO L87 Difference]: Start difference. First operand 330 states and 402 transitions. Second operand has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-17 16:52:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:52:00,382 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2022-03-17 16:52:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-17 16:52:00,382 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 84 [2022-03-17 16:52:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:52:00,384 INFO L225 Difference]: With dead ends: 390 [2022-03-17 16:52:00,384 INFO L226 Difference]: Without dead ends: 377 [2022-03-17 16:52:00,384 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2022-03-17 16:52:00,385 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:52:00,385 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 521 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-17 16:52:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-17 16:52:00,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2022-03-17 16:52:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 247 states have (on average 1.1902834008097165) internal successors, (294), 252 states have internal predecessors, (294), 84 states have call successors, (84), 37 states have call predecessors, (84), 36 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-17 16:52:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 460 transitions. [2022-03-17 16:52:00,392 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 460 transitions. Word has length 84 [2022-03-17 16:52:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:52:00,392 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 460 transitions. [2022-03-17 16:52:00,393 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-17 16:52:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 460 transitions. [2022-03-17 16:52:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-17 16:52:00,393 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:52:00,393 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:52:00,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-17 16:52:00,610 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-17 16:52:00,610 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:52:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:52:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash 653404933, now seen corresponding path program 1 times [2022-03-17 16:52:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:52:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858837775] [2022-03-17 16:52:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:52:00,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:52:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619672973] [2022-03-17 16:52:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:52:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:52:00,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:52:00,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-17 16:52:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:52:00,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-17 16:52:00,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:52:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 23 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-03-17 16:52:01,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:52:01,761 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-17 16:52:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:52:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858837775] [2022-03-17 16:52:02,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:52:02,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619672973] [2022-03-17 16:52:02,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619672973] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 16:52:02,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-17 16:52:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-17 16:52:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671538629] [2022-03-17 16:52:02,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-17 16:52:02,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 16:52:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:52:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 16:52:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-17 16:52:02,343 INFO L87 Difference]: Start difference. First operand 368 states and 460 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-17 16:52:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:52:03,590 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2022-03-17 16:52:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 16:52:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 101 [2022-03-17 16:52:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:52:03,592 INFO L225 Difference]: With dead ends: 375 [2022-03-17 16:52:03,593 INFO L226 Difference]: Without dead ends: 375 [2022-03-17 16:52:03,593 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-03-17 16:52:03,593 INFO L912 BasicCegarLoop]: 53 mSDtfsCounter, 33 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 16:52:03,593 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 361 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 16:52:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-17 16:52:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2022-03-17 16:52:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 250 states have (on average 1.184) internal successors, (296), 255 states have internal predecessors, (296), 84 states have call successors, (84), 38 states have call predecessors, (84), 37 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-17 16:52:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 462 transitions. [2022-03-17 16:52:03,600 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 462 transitions. Word has length 101 [2022-03-17 16:52:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:52:03,601 INFO L478 AbstractCegarLoop]: Abstraction has 372 states and 462 transitions. [2022-03-17 16:52:03,601 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-17 16:52:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 462 transitions. [2022-03-17 16:52:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-17 16:52:03,601 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:52:03,602 INFO L500 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:52:03,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-17 16:52:03,819 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-17 16:52:03,819 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:52:03,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:52:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash 487608439, now seen corresponding path program 4 times [2022-03-17 16:52:03,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:52:03,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137879883] [2022-03-17 16:52:03,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:52:03,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:52:03,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531779030] [2022-03-17 16:52:03,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-17 16:52:03,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:52:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:52:03,830 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:52:03,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-17 16:52:03,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-17 16:52:03,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:52:03,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-17 16:52:03,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:52:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-17 16:52:03,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 16:52:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:52:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137879883] [2022-03-17 16:52:03,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:52:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531779030] [2022-03-17 16:52:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531779030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 16:52:03,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 16:52:03,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 16:52:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767038199] [2022-03-17 16:52:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 16:52:03,997 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 16:52:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:52:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 16:52:03,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 16:52:03,997 INFO L87 Difference]: Start difference. First operand 372 states and 462 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-17 16:52:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:52:04,043 INFO L93 Difference]: Finished difference Result 417 states and 535 transitions. [2022-03-17 16:52:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 16:52:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 105 [2022-03-17 16:52:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:52:04,045 INFO L225 Difference]: With dead ends: 417 [2022-03-17 16:52:04,045 INFO L226 Difference]: Without dead ends: 417 [2022-03-17 16:52:04,045 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-17 16:52:04,045 INFO L912 BasicCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 16:52:04,045 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 194 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 16:52:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-17 16:52:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 387. [2022-03-17 16:52:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 259 states have (on average 1.193050193050193) internal successors, (309), 263 states have internal predecessors, (309), 90 states have call successors, (90), 38 states have call predecessors, (90), 37 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2022-03-17 16:52:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 487 transitions. [2022-03-17 16:52:04,057 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 487 transitions. Word has length 105 [2022-03-17 16:52:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:52:04,058 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 487 transitions. [2022-03-17 16:52:04,059 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-17 16:52:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 487 transitions. [2022-03-17 16:52:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-17 16:52:04,060 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:52:04,060 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:52:04,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-17 16:52:04,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-17 16:52:04,276 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:52:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:52:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash 791718745, now seen corresponding path program 1 times [2022-03-17 16:52:04,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:52:04,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034131916] [2022-03-17 16:52:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:04,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:52:04,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:52:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672689001] [2022-03-17 16:52:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:04,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:52:04,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:52:04,286 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:52:04,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-17 16:52:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:52:04,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-17 16:52:04,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:52:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-17 16:52:04,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:52:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-03-17 16:52:04,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:52:04,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034131916] [2022-03-17 16:52:04,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:52:04,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672689001] [2022-03-17 16:52:04,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672689001] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:52:04,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:52:04,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-03-17 16:52:04,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80116325] [2022-03-17 16:52:04,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:52:04,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 16:52:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:52:04,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 16:52:04,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-03-17 16:52:04,718 INFO L87 Difference]: Start difference. First operand 387 states and 487 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2022-03-17 16:52:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:52:04,954 INFO L93 Difference]: Finished difference Result 804 states and 987 transitions. [2022-03-17 16:52:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 16:52:04,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) Word has length 116 [2022-03-17 16:52:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:52:04,957 INFO L225 Difference]: With dead ends: 804 [2022-03-17 16:52:04,957 INFO L226 Difference]: Without dead ends: 804 [2022-03-17 16:52:04,957 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=297, Unknown=0, NotChecked=0, Total=462 [2022-03-17 16:52:04,958 INFO L912 BasicCegarLoop]: 74 mSDtfsCounter, 156 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 16:52:04,958 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 355 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 16:52:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-03-17 16:52:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 778. [2022-03-17 16:52:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 507 states have (on average 1.1637080867850098) internal successors, (590), 514 states have internal predecessors, (590), 189 states have call successors, (189), 82 states have call predecessors, (189), 81 states have return successors, (184), 181 states have call predecessors, (184), 184 states have call successors, (184) [2022-03-17 16:52:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 963 transitions. [2022-03-17 16:52:04,977 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 963 transitions. Word has length 116 [2022-03-17 16:52:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:52:04,978 INFO L478 AbstractCegarLoop]: Abstraction has 778 states and 963 transitions. [2022-03-17 16:52:04,978 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 7 states have call predecessors, (34), 8 states have call successors, (34) [2022-03-17 16:52:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 963 transitions. [2022-03-17 16:52:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-03-17 16:52:04,980 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:52:04,980 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:52:05,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-17 16:52:05,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-17 16:52:05,187 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:52:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:52:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -351372628, now seen corresponding path program 2 times [2022-03-17 16:52:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:52:05,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090838747] [2022-03-17 16:52:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:52:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:52:05,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:52:05,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690472026] [2022-03-17 16:52:05,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 16:52:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:52:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:52:05,200 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:52:05,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-17 16:52:05,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 16:52:05,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:52:05,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-17 16:52:05,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:52:08,802 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-17 16:52:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 139 proven. 92 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-03-17 16:52:10,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:52:28,878 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-17 16:52:38,394 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (div (+ c_main_~b~0 (* (- 1) c_main_~c~0) c_main_~a~0) c_main_~b~0))) (let ((.cse1 (* c_main_~q~0 c_main_~x~0)) (.cse2 (* c_main_~s~0 c_main_~y~0)) (.cse0 (* .cse3 c_main_~b~0))) (or (<= (+ .cse0 c_main_~b~0) c_main_~a~0) (< c_main_~c~0 c_main_~b~0) (not (= (+ (* c_main_~b~0 c_main_~k~0) c_main_~c~0) c_main_~a~0)) (not (= (+ .cse1 .cse2 (* c_main_~b~0 c_main_~y~0)) (+ (* c_main_~q~0 c_main_~xy~0) (* c_main_~yy~0 c_main_~s~0) c_main_~b~0))) (= (+ (* c_main_~yy~0 .cse3 c_main_~s~0) (* .cse3 c_main_~q~0 c_main_~xy~0) (* c_main_~p~0 c_main_~x~0 c_main_~y~0) (* c_main_~r~0 c_main_~y~0 c_main_~y~0)) (+ (* .cse3 c_main_~q~0 c_main_~x~0 c_main_~y~0) (* .cse3 c_main_~s~0 c_main_~y~0 c_main_~y~0) (* c_main_~yy~0 c_main_~r~0) (* c_main_~xy~0 c_main_~p~0))) (not (= c_main_~b~0 (+ .cse1 .cse2))) (not (= (+ .cse0 (* c_main_~p~0 c_main_~x~0) (* c_main_~r~0 c_main_~y~0)) (+ (* .cse3 c_main_~s~0 c_main_~y~0) (* .cse3 c_main_~q~0 c_main_~x~0) c_main_~a~0)))))) is different from true [2022-03-17 16:52:39,477 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-17 16:52:56,205 WARN L232 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:52:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 148 proven. 77 refuted. 0 times theorem prover too weak. 282 trivial. 9 not checked. [2022-03-17 16:52:56,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:52:56,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090838747] [2022-03-17 16:52:56,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:52:56,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690472026] [2022-03-17 16:52:56,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690472026] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:52:56,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:52:56,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 30 [2022-03-17 16:52:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116080881] [2022-03-17 16:52:56,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:52:56,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-17 16:52:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:52:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-17 16:52:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=642, Unknown=7, NotChecked=54, Total=870 [2022-03-17 16:52:56,649 INFO L87 Difference]: Start difference. First operand 778 states and 963 transitions. Second operand has 30 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 21 states have internal predecessors, (60), 17 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) [2022-03-17 16:52:58,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:05,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:08,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:19,780 WARN L232 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 127 DAG size of output: 126 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:53:27,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:29,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:33,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:53:55,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:00,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:02,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:11,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:13,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:29,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:31,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:54:38,923 WARN L232 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 86 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:54:49,006 WARN L232 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:55:02,229 WARN L232 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:55:21,429 WARN L232 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 91 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:55:23,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:25,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:34,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:36,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:38,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:41,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:43,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:45,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:47,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:49,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:51,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:53,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:55,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:55:55,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:55:55,698 INFO L93 Difference]: Finished difference Result 955 states and 1208 transitions. [2022-03-17 16:55:55,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-17 16:55:55,698 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 21 states have internal predecessors, (60), 17 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) Word has length 124 [2022-03-17 16:55:55,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:55:55,701 INFO L225 Difference]: With dead ends: 955 [2022-03-17 16:55:55,702 INFO L226 Difference]: Without dead ends: 955 [2022-03-17 16:55:55,702 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 217 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 139.7s TimeCoverageRelationStatistics Valid=600, Invalid=2045, Unknown=11, NotChecked=100, Total=2756 [2022-03-17 16:55:55,703 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 206 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 302 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 74.5s IncrementalHoareTripleChecker+Time [2022-03-17 16:55:55,703 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 716 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1013 Invalid, 23 Unknown, 129 Unchecked, 74.5s Time] [2022-03-17 16:55:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-03-17 16:55:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 925. [2022-03-17 16:55:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 596 states have (on average 1.1761744966442953) internal successors, (701), 605 states have internal predecessors, (701), 238 states have call successors, (238), 91 states have call predecessors, (238), 90 states have return successors, (233), 228 states have call predecessors, (233), 233 states have call successors, (233) [2022-03-17 16:55:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1172 transitions. [2022-03-17 16:55:55,721 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1172 transitions. Word has length 124 [2022-03-17 16:55:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:55:55,721 INFO L478 AbstractCegarLoop]: Abstraction has 925 states and 1172 transitions. [2022-03-17 16:55:55,721 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 21 states have internal predecessors, (60), 17 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) [2022-03-17 16:55:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1172 transitions. [2022-03-17 16:55:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-17 16:55:55,723 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:55:55,723 INFO L500 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:55:55,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-17 16:55:55,940 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:55:55,940 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:55:55,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:55:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1703433466, now seen corresponding path program 3 times [2022-03-17 16:55:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:55:55,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2532569] [2022-03-17 16:55:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:55:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:55:55,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:55:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828169644] [2022-03-17 16:55:55,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-17 16:55:55,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:55:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:55:55,948 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:55:55,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-17 16:55:56,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-17 16:55:56,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:55:56,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-17 16:55:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:55:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 100 proven. 57 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-03-17 16:55:57,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:56:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-03-17 16:56:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:56:13,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2532569] [2022-03-17 16:56:13,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:56:13,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828169644] [2022-03-17 16:56:13,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828169644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:56:13,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:56:13,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-03-17 16:56:13,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985854031] [2022-03-17 16:56:13,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:56:13,108 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-17 16:56:13,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:56:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-17 16:56:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=356, Unknown=1, NotChecked=0, Total=462 [2022-03-17 16:56:13,108 INFO L87 Difference]: Start difference. First operand 925 states and 1172 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-03-17 16:56:15,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:56:28,809 WARN L232 SmtUtils]: Spent 10.72s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:56:36,054 WARN L232 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 128 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:56:47,272 WARN L232 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 82 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 16:56:49,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:56:51,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:56:58,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:05,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:07,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:09,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:11,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:13,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:15,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:17,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:20,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:22,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:24,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:26,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:28,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:31,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:33,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:35,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:37,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:39,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:40,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:47,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 16:57:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:57:47,441 INFO L93 Difference]: Finished difference Result 1136 states and 1469 transitions. [2022-03-17 16:57:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-17 16:57:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) Word has length 128 [2022-03-17 16:57:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:57:47,445 INFO L225 Difference]: With dead ends: 1136 [2022-03-17 16:57:47,445 INFO L226 Difference]: Without dead ends: 1130 [2022-03-17 16:57:47,445 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 233 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=349, Invalid=982, Unknown=1, NotChecked=0, Total=1332 [2022-03-17 16:57:47,446 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 170 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 205 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2022-03-17 16:57:47,446 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 691 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 854 Invalid, 21 Unknown, 0 Unchecked, 49.2s Time] [2022-03-17 16:57:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2022-03-17 16:57:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1096. [2022-03-17 16:57:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 718 states have (on average 1.2033426183844012) internal successors, (864), 727 states have internal predecessors, (864), 278 states have call successors, (278), 101 states have call predecessors, (278), 99 states have return successors, (275), 267 states have call predecessors, (275), 275 states have call successors, (275) [2022-03-17 16:57:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1417 transitions. [2022-03-17 16:57:47,462 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1417 transitions. Word has length 128 [2022-03-17 16:57:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:57:47,462 INFO L478 AbstractCegarLoop]: Abstraction has 1096 states and 1417 transitions. [2022-03-17 16:57:47,463 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-03-17 16:57:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1417 transitions. [2022-03-17 16:57:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-17 16:57:47,463 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:57:47,464 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:57:47,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-17 16:57:47,679 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:47,679 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:57:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:57:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1569660177, now seen corresponding path program 1 times [2022-03-17 16:57:47,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:57:47,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834038592] [2022-03-17 16:57:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:57:47,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:57:47,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:57:47,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092026566] [2022-03-17 16:57:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:57:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:47,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:57:47,687 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:57:47,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-17 16:57:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 16:57:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-17 16:57:47,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:57:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-03-17 16:57:47,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:57:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-03-17 16:57:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:57:48,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834038592] [2022-03-17 16:57:48,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:57:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092026566] [2022-03-17 16:57:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092026566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:57:48,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:57:48,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-03-17 16:57:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731350627] [2022-03-17 16:57:48,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:57:48,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-17 16:57:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:57:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-17 16:57:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-03-17 16:57:48,131 INFO L87 Difference]: Start difference. First operand 1096 states and 1417 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 11 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2022-03-17 16:57:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:57:48,325 INFO L93 Difference]: Finished difference Result 1129 states and 1436 transitions. [2022-03-17 16:57:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 16:57:48,325 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 11 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) Word has length 133 [2022-03-17 16:57:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:57:48,328 INFO L225 Difference]: With dead ends: 1129 [2022-03-17 16:57:48,328 INFO L226 Difference]: Without dead ends: 1129 [2022-03-17 16:57:48,329 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2022-03-17 16:57:48,329 INFO L912 BasicCegarLoop]: 72 mSDtfsCounter, 145 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 16:57:48,329 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 329 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 16:57:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-03-17 16:57:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1117. [2022-03-17 16:57:48,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 739 states have (on average 1.182679296346414) internal successors, (874), 748 states have internal predecessors, (874), 278 states have call successors, (278), 101 states have call predecessors, (278), 99 states have return successors, (275), 267 states have call predecessors, (275), 275 states have call successors, (275) [2022-03-17 16:57:48,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1427 transitions. [2022-03-17 16:57:48,345 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1427 transitions. Word has length 133 [2022-03-17 16:57:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:57:48,345 INFO L478 AbstractCegarLoop]: Abstraction has 1117 states and 1427 transitions. [2022-03-17 16:57:48,345 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 11 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2022-03-17 16:57:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1427 transitions. [2022-03-17 16:57:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-17 16:57:48,346 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:57:48,346 INFO L500 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:57:48,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-17 16:57:48,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:48,559 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:57:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:57:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1381701507, now seen corresponding path program 2 times [2022-03-17 16:57:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:57:48,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172372206] [2022-03-17 16:57:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:57:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:57:48,565 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:57:48,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148250750] [2022-03-17 16:57:48,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 16:57:48,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:57:48,568 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:57:48,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-17 16:57:48,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 16:57:48,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 16:57:48,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-17 16:57:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 16:57:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 123 proven. 126 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-03-17 16:57:50,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 16:57:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-17 16:57:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 16:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172372206] [2022-03-17 16:57:51,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 16:57:51,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148250750] [2022-03-17 16:57:51,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148250750] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 16:57:51,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 16:57:51,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2022-03-17 16:57:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093119655] [2022-03-17 16:57:51,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 16:57:51,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-17 16:57:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 16:57:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-17 16:57:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-03-17 16:57:51,707 INFO L87 Difference]: Start difference. First operand 1117 states and 1427 transitions. Second operand has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-17 16:57:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 16:57:56,053 INFO L93 Difference]: Finished difference Result 1169 states and 1482 transitions. [2022-03-17 16:57:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-17 16:57:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 134 [2022-03-17 16:57:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 16:57:56,057 INFO L225 Difference]: With dead ends: 1169 [2022-03-17 16:57:56,057 INFO L226 Difference]: Without dead ends: 1160 [2022-03-17 16:57:56,058 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2022-03-17 16:57:56,058 INFO L912 BasicCegarLoop]: 65 mSDtfsCounter, 130 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-17 16:57:56,058 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 794 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-17 16:57:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-03-17 16:57:56,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1097. [2022-03-17 16:57:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 718 states have (on average 1.1615598885793872) internal successors, (834), 730 states have internal predecessors, (834), 273 states have call successors, (273), 106 states have call predecessors, (273), 105 states have return successors, (271), 260 states have call predecessors, (271), 271 states have call successors, (271) [2022-03-17 16:57:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1378 transitions. [2022-03-17 16:57:56,077 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1378 transitions. Word has length 134 [2022-03-17 16:57:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 16:57:56,077 INFO L478 AbstractCegarLoop]: Abstraction has 1097 states and 1378 transitions. [2022-03-17 16:57:56,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-17 16:57:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1378 transitions. [2022-03-17 16:57:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-03-17 16:57:56,079 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 16:57:56,079 INFO L500 BasicCegarLoop]: trace histogram [25, 24, 24, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2022-03-17 16:57:56,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-17 16:57:56,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:56,295 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 16:57:56,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 16:57:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash 178424492, now seen corresponding path program 2 times [2022-03-17 16:57:56,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 16:57:56,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150400979] [2022-03-17 16:57:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 16:57:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 16:57:56,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 16:57:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497520073] [2022-03-17 16:57:56,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 16:57:56,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 16:57:56,303 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 16:57:56,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-17 16:57:56,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 16:57:56,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-17 16:57:56,442 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 16:57:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 16:57:56,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 16:57:56,584 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 16:57:56,585 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 16:57:56,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-17 16:57:56,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 16:57:56,789 INFO L718 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 16:57:56,791 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 16:57:56,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 04:57:56 BasicIcfg [2022-03-17 16:57:56,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 16:57:56,850 INFO L158 Benchmark]: Toolchain (without parser) took 371244.71ms. Allocated memory was 190.8MB in the beginning and 318.8MB in the end (delta: 127.9MB). Free memory was 135.4MB in the beginning and 122.6MB in the end (delta: 12.8MB). Peak memory consumption was 141.1MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,850 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 16:57:56,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.96ms. Allocated memory was 190.8MB in the beginning and 265.3MB in the end (delta: 74.4MB). Free memory was 135.2MB in the beginning and 236.0MB in the end (delta: -100.8MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,851 INFO L158 Benchmark]: Boogie Preprocessor took 20.66ms. Allocated memory is still 265.3MB. Free memory was 236.0MB in the beginning and 234.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,851 INFO L158 Benchmark]: RCFGBuilder took 275.77ms. Allocated memory is still 265.3MB. Free memory was 234.5MB in the beginning and 222.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,851 INFO L158 Benchmark]: IcfgTransformer took 17.71ms. Allocated memory is still 265.3MB. Free memory was 222.4MB in the beginning and 220.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,852 INFO L158 Benchmark]: TraceAbstraction took 370699.69ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 220.3MB in the beginning and 122.6MB in the end (delta: 97.8MB). Peak memory consumption was 152.3MB. Max. memory is 8.0GB. [2022-03-17 16:57:56,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.96ms. Allocated memory was 190.8MB in the beginning and 265.3MB in the end (delta: 74.4MB). Free memory was 135.2MB in the beginning and 236.0MB in the end (delta: -100.8MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.66ms. Allocated memory is still 265.3MB. Free memory was 236.0MB in the beginning and 234.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 275.77ms. Allocated memory is still 265.3MB. Free memory was 234.5MB in the beginning and 222.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 17.71ms. Allocated memory is still 265.3MB. Free memory was 222.4MB in the beginning and 220.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 370699.69ms. Allocated memory was 265.3MB in the beginning and 318.8MB in the end (delta: 53.5MB). Free memory was 220.3MB in the beginning and 122.6MB in the end (delta: 97.8MB). Peak memory consumption was 152.3MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=13, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=5, y=8] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=5, y=8] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [\old(counter)=0, a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [\old(counter)=0, a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [\old(counter)=0, a=5, b=8, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [\old(counter)=0, a=5, b=8, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=5, b=8, c=5, counter=1, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=5, b=8, c=5, counter=2, k=0, p=1, q=0, r=0, s=1, x=5, xy=40, y=8, yy=64] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=8, b=5, c=5, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=5, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=8, b=5, c=8, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=8, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=8, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=8, b=5, c=3, counter=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, counter++=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=8, b=5, c=3, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=5, xy=40, y=8, yy=64] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=5, b=3, c=3, counter=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=3, counter=6, counter++=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=5, b=3, c=5, counter=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=5, counter=7, counter++=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=5, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=5, b=3, c=2, counter=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, counter++=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=5, b=3, c=2, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=5, xy=40, y=8, yy=64] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=3, b=2, c=2, counter=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=2, counter=9, counter++=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L40] COND TRUE counter++<10 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=3, b=2, c=3, counter=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=3, counter=10, counter++=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L46] COND TRUE counter++<10 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=3, b=2, c=3, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=3, b=2, c=1, counter=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L46] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=1, counter=11, counter++=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=5, xy=40, y=8, yy=64] [L46] COND FALSE !(counter++<10) [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=2, b=1, c=1, counter=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=5, xy=40, y=8, yy=64] [L40] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, c=1, counter=12, counter++=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=5, xy=40, y=8, yy=64] [L40] COND FALSE !(counter++<10) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=12] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=12] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=12] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 370.6s, OverallIterations: 23, TraceHistogramMax: 25, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 284.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 44 mSolverCounterUnknown, 1493 SdHoareTripleChecker+Valid, 131.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1413 mSDsluCounter, 6952 SdHoareTripleChecker+Invalid, 130.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 129 IncrementalHoareTripleChecker+Unchecked, 5806 mSDsCounter, 1457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5293 IncrementalHoareTripleChecker+Invalid, 6923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1457 mSolverCounterUnsat, 1146 mSDtfsCounter, 5293 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3002 GetRequests, 2618 SyntacticMatches, 24 SemanticMatches, 360 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 199.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1117occurred in iteration=21, InterpolantAutomatonStates: 285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 301 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 78.8s InterpolantComputationTime, 1829 NumberOfCodeBlocks, 1755 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2804 ConstructedInterpolants, 0 QuantifiedInterpolants, 22306 SizeOfPredicates, 122 NumberOfNonLiveVariables, 4696 ConjunctsInSsa, 577 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 5856/7232 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-17 16:57:56,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...