/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:49:43,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:49:43,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:49:43,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:49:43,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:49:43,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:49:43,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:49:43,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:49:43,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:49:43,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:49:43,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:49:43,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:49:43,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:49:43,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:49:43,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:49:43,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:49:43,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:49:43,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:49:43,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:49:43,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:49:43,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:49:43,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:49:43,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:49:43,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:49:43,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:49:43,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:49:43,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:49:43,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:49:43,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:49:43,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:49:43,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:49:43,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:49:43,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:49:43,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:49:43,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:49:43,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:49:43,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:49:43,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:49:43,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:49:43,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:49:43,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:49:43,851 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:49:43,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:49:43,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:49:43,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:49:43,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:49:43,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:49:43,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:49:43,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:49:43,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:49:43,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:49:43,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:49:43,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:49:43,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:49:43,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:49:43,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:49:43,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:49:43,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:49:43,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:49:43,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:49:43,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:49:43,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:49:43,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:49:44,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:49:44,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:49:44,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:49:44,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:49:44,328 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:49:44,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2020-12-23 07:49:44,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1ff2a758b/4cbfb8e5130845f18aa54bc03a82c979/FLAGc07808a40 [2020-12-23 07:49:45,124 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:49:45,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c [2020-12-23 07:49:45,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1ff2a758b/4cbfb8e5130845f18aa54bc03a82c979/FLAGc07808a40 [2020-12-23 07:49:45,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1ff2a758b/4cbfb8e5130845f18aa54bc03a82c979 [2020-12-23 07:49:45,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:49:45,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:49:45,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:49:45,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:49:45,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:49:45,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c88638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45, skipping insertion in model container [2020-12-23 07:49:45,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:49:45,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:49:45,705 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 07:49:45,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:49:45,740 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:49:45,756 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_unwindbound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 07:49:45,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:49:45,783 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:49:45,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45 WrapperNode [2020-12-23 07:49:45,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:49:45,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:49:45,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:49:45,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:49:45,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:49:45,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:49:45,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:49:45,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:49:45,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... [2020-12-23 07:49:45,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:49:45,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:49:45,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:49:45,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:49:45,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:49:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:49:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:49:45,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:49:45,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:49:46,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:49:46,260 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 07:49:46,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:46 BoogieIcfgContainer [2020-12-23 07:49:46,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:49:46,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:49:46,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:49:46,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:49:46,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:49:45" (1/3) ... [2020-12-23 07:49:46,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:46, skipping insertion in model container [2020-12-23 07:49:46,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:49:45" (2/3) ... [2020-12-23 07:49:46,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:49:46, skipping insertion in model container [2020-12-23 07:49:46,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:46" (3/3) ... [2020-12-23 07:49:46,273 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound50.c [2020-12-23 07:49:46,281 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:49:46,287 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:49:46,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:49:46,397 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:49:46,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:49:46,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:49:46,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:49:46,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:49:46,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:49:46,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:49:46,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:49:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-23 07:49:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 07:49:46,437 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:46,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 07:49:46,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-23 07:49:46,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:46,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976733061] [2020-12-23 07:49:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:46,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:46,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955426863] [2020-12-23 07:49:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:49:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:49:46,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 07:49:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:49:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:49:46,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976733061] [2020-12-23 07:49:46,944 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:49:46,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955426863] [2020-12-23 07:49:46,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:49:46,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:49:46,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309061175] [2020-12-23 07:49:46,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:49:46,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:49:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:49:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:49:46,971 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-23 07:49:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:49:47,085 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-23 07:49:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:49:47,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-23 07:49:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:49:47,099 INFO L225 Difference]: With dead ends: 44 [2020-12-23 07:49:47,100 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 07:49:47,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:49:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 07:49:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-23 07:49:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:49:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-23 07:49:47,148 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-23 07:49:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:49:47,148 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-23 07:49:47,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:49:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-23 07:49:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:49:47,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:47,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:49:47,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 07:49:47,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-23 07:49:47,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:47,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620117636] [2020-12-23 07:49:47,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:47,376 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:47,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614803983] [2020-12-23 07:49:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:49:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:49:47,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:49:47,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:49:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:49:47,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620117636] [2020-12-23 07:49:47,666 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:49:47,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614803983] [2020-12-23 07:49:47,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:49:47,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:49:47,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057603271] [2020-12-23 07:49:47,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:49:47,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:49:47,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:49:47,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:49:47,671 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-12-23 07:49:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:49:47,863 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-23 07:49:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:49:47,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-23 07:49:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:49:47,866 INFO L225 Difference]: With dead ends: 29 [2020-12-23 07:49:47,866 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:49:47,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:49:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:49:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-23 07:49:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:49:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-23 07:49:47,875 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-12-23 07:49:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:49:47,875 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-23 07:49:47,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:49:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-23 07:49:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:49:47,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:49:47,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-12-23 07:49:48,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:49:48,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:49:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:49:48,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2020-12-23 07:49:48,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:49:48,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547204283] [2020-12-23 07:49:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:49:48,111 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:49:48,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26424837] [2020-12-23 07:49:48,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:49:48,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:49:48,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:49:48,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:49:48,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:11,476 WARN L197 SmtUtils]: Spent 22.92 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:50:17,539 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-23 07:50:19,753 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:50:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:21,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547204283] [2020-12-23 07:50:21,809 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:21,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26424837] [2020-12-23 07:50:21,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:21,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:50:21,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994519231] [2020-12-23 07:50:21,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:50:21,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:50:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=50, Unknown=3, NotChecked=0, Total=72 [2020-12-23 07:50:21,813 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-12-23 07:50:45,591 WARN L197 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-23 07:50:47,666 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:50:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:54,263 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-12-23 07:50:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:50:54,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-23 07:50:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:54,265 INFO L225 Difference]: With dead ends: 33 [2020-12-23 07:50:54,265 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 07:50:54,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 45.8s TimeCoverageRelationStatistics Valid=34, Invalid=92, Unknown=6, NotChecked=0, Total=132 [2020-12-23 07:50:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 07:50:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-12-23 07:50:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:50:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-23 07:50:54,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-12-23 07:50:54,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:54,273 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-23 07:50:54,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:50:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-23 07:50:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:50:54,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:54,274 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:54,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:54,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 1 times [2020-12-23 07:50:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:54,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747763741] [2020-12-23 07:50:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:54,490 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:54,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240549170] [2020-12-23 07:50:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:54,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:50:54,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:54,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747763741] [2020-12-23 07:50:54,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:54,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240549170] [2020-12-23 07:50:54,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:54,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:50:54,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410856008] [2020-12-23 07:50:54,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:50:54,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:50:54,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:54,618 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-12-23 07:50:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:54,673 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-12-23 07:50:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:50:54,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:50:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:54,675 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:50:54,675 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:50:54,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:50:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:50:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 07:50:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:50:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-23 07:50:54,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-12-23 07:50:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:54,682 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-23 07:50:54,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:50:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-23 07:50:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:50:54,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:54,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:54,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:54,898 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:54,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1664485700, now seen corresponding path program 1 times [2020-12-23 07:50:54,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:54,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083938856] [2020-12-23 07:50:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:54,910 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712632967] [2020-12-23 07:50:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:54,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:50:54,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:50:55,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083938856] [2020-12-23 07:50:55,052 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:55,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712632967] [2020-12-23 07:50:55,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:55,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:50:55,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315180906] [2020-12-23 07:50:55,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:50:55,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:50:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:50:55,055 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-12-23 07:50:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:59,136 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-23 07:50:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:50:59,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 07:50:59,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:59,138 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:50:59,138 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:50:59,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:50:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-23 07:50:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-23 07:50:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-23 07:50:59,144 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-12-23 07:50:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:59,144 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-23 07:50:59,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:50:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-23 07:50:59,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:50:59,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:59,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-12-23 07:50:59,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:59,354 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:59,355 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2020-12-23 07:50:59,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:59,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670209593] [2020-12-23 07:50:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:59,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:59,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651400773] [2020-12-23 07:50:59,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:59,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:50:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:50:59,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:50:59,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:59,680 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:50:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:50:59,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670209593] [2020-12-23 07:50:59,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:59,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651400773] [2020-12-23 07:50:59,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:59,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:50:59,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306855034] [2020-12-23 07:50:59,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:50:59,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:59,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:50:59,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:59,728 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-12-23 07:51:15,393 WARN L197 SmtUtils]: Spent 11.12 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 07:51:23,633 WARN L197 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 07:51:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:28,043 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-23 07:51:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:51:28,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:51:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:28,045 INFO L225 Difference]: With dead ends: 23 [2020-12-23 07:51:28,045 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:51:28,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:51:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-23 07:51:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:51:28,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 07:51:28,052 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2020-12-23 07:51:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:28,053 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 07:51:28,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:51:28,053 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 07:51:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:51:28,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:28,054 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:28,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:28,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1808548489, now seen corresponding path program 2 times [2020-12-23 07:51:28,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:28,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281781387] [2020-12-23 07:51:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:28,268 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:28,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809435632] [2020-12-23 07:51:28,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 07:51:28,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:51:28,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:28,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:51:28,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:28,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281781387] [2020-12-23 07:51:28,407 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:28,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809435632] [2020-12-23 07:51:28,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:28,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:51:28,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067012080] [2020-12-23 07:51:28,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:51:28,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:28,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:51:28,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:51:28,410 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2020-12-23 07:51:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:28,492 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-23 07:51:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:51:28,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-23 07:51:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:28,493 INFO L225 Difference]: With dead ends: 28 [2020-12-23 07:51:28,493 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 07:51:28,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:51:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 07:51:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 07:51:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 07:51:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-23 07:51:28,502 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2020-12-23 07:51:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:28,502 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-23 07:51:28,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:51:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-23 07:51:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 07:51:28,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:28,503 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:28,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:28,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:28,722 INFO L82 PathProgramCache]: Analyzing trace with hash 754083403, now seen corresponding path program 3 times [2020-12-23 07:51:28,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:28,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757813352] [2020-12-23 07:51:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:28,746 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:28,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574466019] [2020-12-23 07:51:28,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:28,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:51:28,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:51:28,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:51:28,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:30,367 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:51:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-23 07:51:30,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757813352] [2020-12-23 07:51:30,413 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:30,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574466019] [2020-12-23 07:51:30,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:51:30,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:51:30,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602383336] [2020-12-23 07:51:30,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:51:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:51:30,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:51:30,417 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-12-23 07:51:46,642 WARN L197 SmtUtils]: Spent 12.11 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-23 07:52:01,320 WARN L197 SmtUtils]: Spent 14.66 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-23 07:52:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:52:01,345 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-23 07:52:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:52:01,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-23 07:52:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:52:01,347 INFO L225 Difference]: With dead ends: 24 [2020-12-23 07:52:01,347 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 07:52:01,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:52:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 07:52:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 07:52:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 07:52:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 07:52:01,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-23 07:52:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:52:01,349 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 07:52:01,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:52:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 07:52:01,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 07:52:01,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-23 07:52:01,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 07:52:01,940 WARN L197 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-12-23 07:52:12,080 WARN L197 SmtUtils]: Spent 10.14 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-23 07:52:12,084 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 07:52:12,085 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:52:12,085 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:52:12,085 INFO L185 CegarLoopUtils]: At program point L15-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= ~counter~0 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))) (and .cse0 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0) (+ (* ULTIMATE.start_main_~az~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (let ((.cse3 (= ULTIMATE.start_main_~z~0 0))) (or (let ((.cse2 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse1 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ .cse1 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse3) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0))) (and (= ULTIMATE.start_main_~y~0 0) .cse3)))))) [2020-12-23 07:52:12,085 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-23 07:52:12,086 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2020-12-23 07:52:12,086 INFO L189 CegarLoopUtils]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2020-12-23 07:52:12,086 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 07:52:12,086 INFO L185 CegarLoopUtils]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0))) (or (let ((.cse2 (= ULTIMATE.start_main_~z~0 0))) (let ((.cse1 (let ((.cse4 (+ (* ULTIMATE.start_main_~a~0 (- 1)) ULTIMATE.start_main_~x~0))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse4 ULTIMATE.start_main_~z~0))) (= (+ .cse3 (* ULTIMATE.start_main_~az~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (+ (* .cse3 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0))) (not .cse2) (= (mod .cse4 ULTIMATE.start_main_~z~0) 0))))) (and (or .cse0 .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or .cse1 (and (= ULTIMATE.start_main_~y~0 0) .cse2))))) (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~az~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0))))) [2020-12-23 07:52:12,086 INFO L189 CegarLoopUtils]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2020-12-23 07:52:12,086 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 07:52:12,087 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 07:52:12,087 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-23 07:52:12,087 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:52:12,087 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-23 07:52:12,087 INFO L192 CegarLoopUtils]: At program point L45(lines 22 46) the Hoare annotation is: true [2020-12-23 07:52:12,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:52:12 BoogieIcfgContainer [2020-12-23 07:52:12,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:52:12,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:52:12,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:52:12,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:52:12,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:49:46" (3/4) ... [2020-12-23 07:52:12,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 07:52:12,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 07:52:12,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 07:52:12,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:52:12,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 07:52:12,173 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo3-ll_unwindbound50.c-witness.graphml [2020-12-23 07:52:12,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:52:12,175 INFO L168 Benchmark]: Toolchain (without parser) took 146690.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 65.2 MB in the end (delta: 62.7 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,175 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:52:12,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.40 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 117.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.79 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,177 INFO L168 Benchmark]: Boogie Preprocessor took 30.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,178 INFO L168 Benchmark]: RCFGBuilder took 398.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 102.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,178 INFO L168 Benchmark]: TraceAbstraction took 145844.86 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 67.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,179 INFO L168 Benchmark]: Witness Printer took 63.59 ms. Allocated memory is still 151.0 MB. Free memory was 67.9 MB in the beginning and 65.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:52:12,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.40 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 117.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.79 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 398.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 102.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 145844.86 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 67.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 8.0 GB. * Witness Printer took 63.59 ms. Allocated memory is still 151.0 MB. Free memory was 67.9 MB in the beginning and 65.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((a == x || (((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0)) && 1 == cond) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) || (((a == x && counter <= 0) && y == 1) && az == a * z) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((counter <= 1 && a == x) && 1 == cond) && y == 1) && az == a * z) || ((1 == cond && z * x + a == az * y + x) && ((((y % z == 0 && (a * -1 + x) / z + az * (y / z) == (a * -1 + x) / z * z + a) && !(z == 0)) && (a * -1 + x) % z == 0) || (y == 0 && z == 0))) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 135.1s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 96.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 92 SDslu, 197 SDs, 0 SdLazy, 179 SolverSat, 41 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 36.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 94.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 208 HoareAnnotationTreeSize, 4 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 686 FormulaSimplificationTreeSizeReductionInter, 10.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 36.1s InterpolantComputationTime, 122 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 14194 SizeOfPredicates, 58 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 64/104 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 correct! Received shutdown request...