java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/float-benchs/interpolation.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:34:27,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:34:27,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:34:27,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:34:27,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:34:27,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:34:27,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:34:27,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:34:27,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:34:27,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:34:27,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:34:27,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:34:27,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:34:27,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:34:27,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:34:27,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:34:27,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:34:27,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:34:27,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:34:27,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:34:27,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:34:27,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:34:27,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:34:27,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:34:27,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:34:27,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:34:27,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:34:27,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:34:27,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:34:27,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:34:27,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:34:27,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:34:27,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:34:27,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:34:27,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:34:27,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:34:27,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:34:27,154 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:34:27,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:34:27,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:34:27,158 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:34:27,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:34:27,159 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:34:27,159 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:34:27,159 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:34:27,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:34:27,160 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:34:27,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:34:27,162 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:34:27,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:34:27,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:34:27,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:34:27,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:34:27,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:34:27,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:34:27,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:34:27,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:34:27,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:34:27,164 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:34:27,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:34:27,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:34:27,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:34:27,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:34:27,166 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:34:27,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:34:27,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:34:27,166 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:34:27,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:34:27,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:34:27,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:34:27,241 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:34:27,242 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:34:27,243 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.v+cfa-reducer.c [2019-09-10 01:34:27,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27dda3a1/dca0872ed296484cbeefc2d73baafcd3/FLAGf0a47ee9e [2019-09-10 01:34:27,740 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:34:27,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/interpolation.c.v+cfa-reducer.c [2019-09-10 01:34:27,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27dda3a1/dca0872ed296484cbeefc2d73baafcd3/FLAGf0a47ee9e [2019-09-10 01:34:28,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27dda3a1/dca0872ed296484cbeefc2d73baafcd3 [2019-09-10 01:34:28,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:34:28,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:34:28,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:34:28,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:34:28,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:34:28,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2301ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28, skipping insertion in model container [2019-09-10 01:34:28,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:34:28,152 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:34:28,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:34:28,345 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:34:28,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:34:28,477 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:34:28,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28 WrapperNode [2019-09-10 01:34:28,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:34:28,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:34:28,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:34:28,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:34:28,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... [2019-09-10 01:34:28,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:34:28,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:34:28,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:34:28,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:34:28,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:34:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:34:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:34:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:34:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:34:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-09-10 01:34:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:34:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:34:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:34:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:34:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-09-10 01:34:28,803 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:34:28,803 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:34:28,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:34:28 BoogieIcfgContainer [2019-09-10 01:34:28,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:34:28,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:34:28,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:34:28,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:34:28,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:34:28" (1/3) ... [2019-09-10 01:34:28,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a390a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:34:28, skipping insertion in model container [2019-09-10 01:34:28,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:34:28" (2/3) ... [2019-09-10 01:34:28,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a390a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:34:28, skipping insertion in model container [2019-09-10 01:34:28,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:34:28" (3/3) ... [2019-09-10 01:34:28,812 INFO L109 eAbstractionObserver]: Analyzing ICFG interpolation.c.v+cfa-reducer.c [2019-09-10 01:34:28,822 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:34:28,831 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:34:28,850 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:34:28,896 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:34:28,896 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:34:28,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:34:28,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:34:28,897 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:34:28,897 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:34:28,897 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:34:28,897 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:34:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-10 01:34:28,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:34:28,929 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:28,930 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:28,932 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1189108249, now seen corresponding path program 1 times [2019-09-10 01:34:28,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:28,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:28,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:28,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:28,993 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:29,045 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:29,045 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:29,046 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:29,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,064 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Exception during sending of exit command (exit): Stream closed [2019-09-10 01:34:29,098 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:29,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:29,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:29,100 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:34:29,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,117 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:29,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 01:34:29,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:29,217 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:29,250 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:29,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-09-10 01:34:29,250 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:29,255 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:34:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:34:29,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:29,270 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2019-09-10 01:34:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:29,325 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-09-10 01:34:29,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:34:29,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-10 01:34:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:29,340 INFO L225 Difference]: With dead ends: 27 [2019-09-10 01:34:29,340 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:34:29,347 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:34:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:34:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:34:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:34:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-09-10 01:34:29,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2019-09-10 01:34:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:29,389 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-09-10 01:34:29,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:34:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-09-10 01:34:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:34:29,391 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:29,391 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:29,391 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1204212286, now seen corresponding path program 1 times [2019-09-10 01:34:29,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:29,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:29,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:29,395 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:29,443 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:29,443 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:29,443 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:29,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,463 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:29,484 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:29,484 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:29,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:29,485 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:29,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,498 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:34:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:29,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-10 01:34:29,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:29,539 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 01:34:29,558 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:29,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-09-10 01:34:29,558 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:29,560 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:34:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:34:29,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:29,561 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-09-10 01:34:29,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:29,580 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-09-10 01:34:29,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:34:29,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-10 01:34:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:29,582 INFO L225 Difference]: With dead ends: 29 [2019-09-10 01:34:29,582 INFO L226 Difference]: Without dead ends: 29 [2019-09-10 01:34:29,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:34:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-10 01:34:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2019-09-10 01:34:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 01:34:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-09-10 01:34:29,588 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2019-09-10 01:34:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:29,588 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-09-10 01:34:29,589 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:34:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-09-10 01:34:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:34:29,590 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:29,590 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:29,590 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:29,591 INFO L82 PathProgramCache]: Analyzing trace with hash -900055575, now seen corresponding path program 1 times [2019-09-10 01:34:29,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:29,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:29,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:29,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:29,608 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:29,608 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:29,609 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-09-10 01:34:29,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,635 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:29,653 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:29,653 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:29,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:29,654 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:29,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:29,675 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 01:34:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:29,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 01:34:29,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:29,856 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-10 01:34:29,857 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2019-09-10 01:34:29,859 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-10 01:34:29,883 INFO L567 ElimStorePlain]: treesize reduction 6, result has 80.6 percent of original size [2019-09-10 01:34:29,885 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-10 01:34:29,885 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:21 [2019-09-10 01:34:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:29,907 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:30,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_8 Real)) (or (<= 0.0 v_main_~main__z~0_8) (not (<= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_8)))) is different from false [2019-09-10 01:34:30,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_8 Real)) (or (not (<= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|) .cse0))) v_main_~main__z~0_8)) (<= 0.0 v_main_~main__z~0_8))) is different from false [2019-09-10 01:34:30,314 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_8 Real)) (or (< main_~main__t~0 |c_main_#t~mem1|) (not (<= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|) .cse0))) v_main_~main__z~0_8)) (<= 0.0 v_main_~main__z~0_8))) is different from false [2019-09-10 01:34:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:30,338 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:30,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-09-10 01:34:30,338 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:30,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:34:30,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:34:30,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=31, Unknown=3, NotChecked=36, Total=90 [2019-09-10 01:34:30,339 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2019-09-10 01:34:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:30,460 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2019-09-10 01:34:30,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:34:30,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-09-10 01:34:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:30,462 INFO L225 Difference]: With dead ends: 34 [2019-09-10 01:34:30,462 INFO L226 Difference]: Without dead ends: 34 [2019-09-10 01:34:30,463 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=49, Unknown=3, NotChecked=48, Total=132 [2019-09-10 01:34:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-10 01:34:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2019-09-10 01:34:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-10 01:34:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-10 01:34:30,467 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2019-09-10 01:34:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:30,468 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-10 01:34:30,468 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:34:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-10 01:34:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:34:30,469 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:30,469 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:30,469 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:30,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1703400029, now seen corresponding path program 1 times [2019-09-10 01:34:30,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:30,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:30,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:30,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:30,471 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:30,484 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:30,484 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:30,484 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:30,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:30,510 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:30,525 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2019-09-10 01:34:30,525 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-10 01:34:30,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:34:30,526 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 01:34:30,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:30,543 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 01:34:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:30,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-10 01:34:30,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 01:34:30,700 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-10 01:34:30,700 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2019-09-10 01:34:30,701 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-10 01:34:30,723 INFO L567 ElimStorePlain]: treesize reduction 6, result has 80.6 percent of original size [2019-09-10 01:34:30,724 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-10 01:34:30,724 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:49, output treesize:21 [2019-09-10 01:34:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:30,743 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 01:34:31,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~main__z~0_10 Real)) (or (not (>= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ c_main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_10)) (<= v_main_~main__z~0_10 1.0))) is different from false [2019-09-10 01:34:31,606 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_10 Real)) (or (not (>= (let ((.cse1 (* 4 c_main_~main__i~0))) (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) (+ |c_main_~#main__min~0.offset| .cse1))))) (/ (+ main_~main__t~0 .cse0) (+ (select (select |c_#memory_real| |c_main_~#main__max~0.base|) (+ |c_main_~#main__max~0.offset| .cse1)) .cse0)))) v_main_~main__z~0_10)) (< |c_main_#t~mem3| main_~main__t~0) (<= v_main_~main__z~0_10 1.0))) is different from false [2019-09-10 01:34:34,298 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~main__t~0 Real) (v_main_~main__z~0_10 Real)) (let ((.cse1 (select (select |c_#memory_real| |c_main_~#main__max~0.base|) |c_main_~#main__max~0.offset|))) (or (not (>= (let ((.cse0 (* (- 1.0) (select (select |c_#memory_real| |c_main_~#main__min~0.base|) |c_main_~#main__min~0.offset|)))) (/ (+ main_~main__t~0 .cse0) (+ .cse1 .cse0))) v_main_~main__z~0_10)) (< .cse1 main_~main__t~0) (<= v_main_~main__z~0_10 1.0)))) is different from false [2019-09-10 01:34:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:34:34,342 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:34,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-09-10 01:34:34,342 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:34,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:34:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:34:34,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=44, Unknown=9, NotChecked=48, Total=132 [2019-09-10 01:34:34,343 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2019-09-10 01:34:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:34,990 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-10 01:34:34,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:34:34,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-09-10 01:34:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:34,992 INFO L225 Difference]: With dead ends: 29 [2019-09-10 01:34:34,992 INFO L226 Difference]: Without dead ends: 26 [2019-09-10 01:34:34,993 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=45, Invalid=66, Unknown=11, NotChecked=60, Total=182 [2019-09-10 01:34:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-10 01:34:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-09-10 01:34:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 01:34:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-10 01:34:34,996 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-09-10 01:34:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:34,996 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-10 01:34:34,996 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:34:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-10 01:34:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:34:34,997 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:34:34,997 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:34:34,998 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:34:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1988886884, now seen corresponding path program 1 times [2019-09-10 01:34:34,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:34:34,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:34,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:35,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:34:35,000 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:34:35,013 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-10 01:34:35,013 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-10 01:34:35,014 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-10 01:34:35,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:34:35,032 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-10 01:34:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:34:35,052 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-09-10 01:34:35,054 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [11], [14], [18], [23], [31], [34], [35], [40], [42], [44], [46], [52], [53], [54] [2019-09-10 01:34:35,086 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:34:35,086 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:34:35,145 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:34:35,146 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 34 variables. [2019-09-10 01:34:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:34:35,150 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:34:35,182 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:34:35,182 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:34:35,183 INFO L420 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-09-10 01:34:35,183 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:34:35,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:34:35,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:34:35,184 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:34:35,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:34:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:34:35,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:34:35,185 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-09-10 01:34:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:34:35,186 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:34:35,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:34:35,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-10 01:34:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:34:35,187 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:34:35,187 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:34:35,187 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:34:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:34:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:34:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:34:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:34:35,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-10 01:34:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:34:35,189 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:34:35,189 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:34:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:34:35,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:34:35,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:34:35 BoogieIcfgContainer [2019-09-10 01:34:35,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:34:35,196 INFO L168 Benchmark]: Toolchain (without parser) took 7078.81 ms. Allocated memory was 135.8 MB in the beginning and 231.2 MB in the end (delta: 95.4 MB). Free memory was 91.8 MB in the beginning and 111.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,197 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 110.2 MB in the beginning and 110.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.82 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 91.6 MB in the beginning and 178.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,199 INFO L168 Benchmark]: Boogie Preprocessor took 35.82 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 176.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,200 INFO L168 Benchmark]: RCFGBuilder took 290.55 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 160.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,200 INFO L168 Benchmark]: TraceAbstraction took 6388.45 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 160.2 MB in the beginning and 111.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:34:35,204 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 110.2 MB in the beginning and 110.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.82 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 91.6 MB in the beginning and 178.4 MB in the end (delta: -86.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.82 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 176.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.55 ms. Allocated memory is still 201.3 MB. Free memory was 176.1 MB in the beginning and 160.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6388.45 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 160.2 MB in the beginning and 111.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. SAFE Result, 6.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 81 SDslu, 137 SDs, 0 SdLazy, 71 SolverSat, 5 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9338235294117647 AbsIntWeakeningRatio, 1.4705882352941178 AbsIntAvgWeakeningVarsNumRemoved, 0.9411764705882353 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 126 ConstructedInterpolants, 15 QuantifiedInterpolants, 16820 SizeOfPredicates, 24 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...