/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/hard-u_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:54:56,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:54:56,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:54:57,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:54:57,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:54:57,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:54:57,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:54:57,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:54:57,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:54:57,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:54:57,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:54:57,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:54:57,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:54:57,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:54:57,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:54:57,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:54:57,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:54:57,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:54:57,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:54:57,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:54:57,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:54:57,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:54:57,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:54:57,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:54:57,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 07:54:57,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 07:54:57,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 07:54:57,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 07:54:57,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 07:54:57,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 07:54:57,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:54:57,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:54:57,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:54:57,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:54:57,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:54:57,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:54:57,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:54:57,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:54:57,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:54:57,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:54:57,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:54:57,071 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 07:54:57,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:54:57,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:54:57,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:54:57,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:54:57,133 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:54:57,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:54:57,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:54:57,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:54:57,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:54:57,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:54:57,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:54:57,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:54:57,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:54:57,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:54:57,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:54:57,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:54:57,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:54:57,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:54:57,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:54:57,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:54:57,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:54:57,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:54:57,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:54:57,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:54:57,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:54:57,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:54:57,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:54:57,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:54:57,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:54:57,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:54:57,618 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:54:57,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2020-12-23 07:54:57,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed8020ca6/7d101b8e5589417aa59c0654dff4fcb0/FLAG2c9e54724 [2020-12-23 07:54:58,448 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:54:58,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2020-12-23 07:54:58,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed8020ca6/7d101b8e5589417aa59c0654dff4fcb0/FLAG2c9e54724 [2020-12-23 07:54:58,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ed8020ca6/7d101b8e5589417aa59c0654dff4fcb0 [2020-12-23 07:54:58,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:54:58,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:54:58,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:58,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:54:58,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:54:58,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:58" (1/1) ... [2020-12-23 07:54:58,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e62fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:58, skipping insertion in model container [2020-12-23 07:54:58,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:54:58" (1/1) ... [2020-12-23 07:54:58,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:54:58,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:54:58,985 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/hard-u_valuebound100.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:59,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:59,022 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:54:59,036 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/hard-u_valuebound100.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:54:59,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:54:59,063 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:54:59,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59 WrapperNode [2020-12-23 07:54:59,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:54:59,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:59,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:54:59,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:54:59,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:54:59,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:54:59,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:54:59,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:54:59,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (1/1) ... [2020-12-23 07:54:59,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:54:59,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:54:59,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:54:59,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:54:59,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (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 07:54:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:54:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:54:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:54:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:54:59,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:54:59,748 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:54:59,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:59 BoogieIcfgContainer [2020-12-23 07:54:59,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:54:59,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:54:59,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:54:59,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:54:59,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:54:58" (1/3) ... [2020-12-23 07:54:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e4433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:59, skipping insertion in model container [2020-12-23 07:54:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:54:59" (2/3) ... [2020-12-23 07:54:59,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182e4433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:54:59, skipping insertion in model container [2020-12-23 07:54:59,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:59" (3/3) ... [2020-12-23 07:54:59,768 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound100.c [2020-12-23 07:54:59,778 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:54:59,785 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:54:59,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:54:59,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:54:59,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:54:59,862 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:54:59,862 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:54:59,862 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:54:59,862 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:54:59,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:54:59,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:54:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-23 07:54:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:54:59,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:59,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:59,896 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:59,904 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:54:59,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:59,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861707720] [2020-12-23 07:54:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:00,142 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 07:55:00,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861707720] [2020-12-23 07:55:00,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:00,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:55:00,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142935584] [2020-12-23 07:55:00,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:55:00,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:55:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:00,177 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-23 07:55:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:00,218 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-23 07:55:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:55:00,220 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:55:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:00,243 INFO L225 Difference]: With dead ends: 83 [2020-12-23 07:55:00,243 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 07:55:00,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:55:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 07:55:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-23 07:55:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 07:55:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-23 07:55:00,305 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-23 07:55:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:00,305 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-23 07:55:00,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:55:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-23 07:55:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:55:00,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:00,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:00,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:55:00,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:55:00,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:00,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685454011] [2020-12-23 07:55:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:00,494 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 07:55:00,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685454011] [2020-12-23 07:55:00,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:00,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:00,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762340636] [2020-12-23 07:55:00,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:00,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:00,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:00,499 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-23 07:55:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:00,641 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-23 07:55:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:00,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 07:55:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:00,644 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:55:00,644 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:00,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:55:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-23 07:55:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:55:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-23 07:55:00,654 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-23 07:55:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:00,655 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-23 07:55:00,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-23 07:55:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:55:00,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:00,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:00,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:55:00,657 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-23 07:55:00,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:00,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595060241] [2020-12-23 07:55:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:00,896 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 07:55:00,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595060241] [2020-12-23 07:55:00,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:00,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:55:00,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583230536] [2020-12-23 07:55:00,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:55:00,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:00,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:55:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:55:00,899 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-23 07:55:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:01,021 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-23 07:55:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:55:01,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 07:55:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:01,024 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:55:01,024 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:01,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:55:01,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:55:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:55:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 07:55:01,033 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-23 07:55:01,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:01,033 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 07:55:01,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:55:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 07:55:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:55:01,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:01,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:01,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:55:01,035 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:01,036 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-23 07:55:01,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:01,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580821725] [2020-12-23 07:55:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:01,054 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:01,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568019499] [2020-12-23 07:55:01,055 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 07:55:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:01,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:55:01,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:01,392 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 07:55:01,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580821725] [2020-12-23 07:55:01,396 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:01,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568019499] [2020-12-23 07:55:01,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:01,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:55:01,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749424402] [2020-12-23 07:55:01,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:55:01,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:55:01,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:55:01,403 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-23 07:55:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:01,923 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-23 07:55:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:55:01,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-23 07:55:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:01,926 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:55:01,926 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:55:01,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:55:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:55:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-23 07:55:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:55:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-23 07:55:01,958 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-23 07:55:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:01,959 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-23 07:55:01,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:55:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-23 07:55:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:55:01,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:01,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:02,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:02,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-23 07:55:02,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:02,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879880460] [2020-12-23 07:55:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:02,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:02,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609063256] [2020-12-23 07:55:02,202 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 07:55:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:55:02,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:02,389 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 07:55:02,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879880460] [2020-12-23 07:55:02,390 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:02,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609063256] [2020-12-23 07:55:02,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:02,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:55:02,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499533809] [2020-12-23 07:55:02,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:55:02,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:02,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:55:02,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:55:02,392 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-23 07:55:02,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:02,571 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-23 07:55:02,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:55:02,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:55:02,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:02,573 INFO L225 Difference]: With dead ends: 67 [2020-12-23 07:55:02,573 INFO L226 Difference]: Without dead ends: 56 [2020-12-23 07:55:02,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:55:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-23 07:55:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-23 07:55:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:55:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-23 07:55:02,582 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-23 07:55:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:02,583 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-23 07:55:02,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:55:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-23 07:55:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:55:02,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:02,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:02,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:02,798 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-23 07:55:02,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:02,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231570873] [2020-12-23 07:55:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:02,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:02,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396769866] [2020-12-23 07:55:02,818 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 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 07:55:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:55:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:03,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231570873] [2020-12-23 07:55:03,430 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:03,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396769866] [2020-12-23 07:55:03,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:03,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:55:03,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399871670] [2020-12-23 07:55:03,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:55:03,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:03,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:55:03,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:55:03,439 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-23 07:55:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:04,361 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-23 07:55:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:55:04,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-23 07:55:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:04,363 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:55:04,363 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:55:04,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:55:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:55:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-23 07:55:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 07:55:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-23 07:55:04,375 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-23 07:55:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:04,375 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-23 07:55:04,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:55:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-23 07:55:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:55:04,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:04,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:04,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:04,581 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:04,582 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-23 07:55:04,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:04,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955210339] [2020-12-23 07:55:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:04,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:04,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325310316] [2020-12-23 07:55:04,596 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 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 07:55:06,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:55:06,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:55:06,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-23 07:55:06,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:55:06,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955210339] [2020-12-23 07:55:06,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:06,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325310316] [2020-12-23 07:55:06,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:55:06,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-23 07:55:06,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644082306] [2020-12-23 07:55:06,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-23 07:55:06,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:55:06,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-23 07:55:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:55:06,947 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 15 states. [2020-12-23 07:55:07,431 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-12-23 07:55:09,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:55:09,247 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-12-23 07:55:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:55:09,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-12-23 07:55:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:55:09,250 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:55:09,250 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:55:09,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-12-23 07:55:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:55:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-12-23 07:55:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 07:55:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-23 07:55:09,262 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 29 [2020-12-23 07:55:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:55:09,263 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-23 07:55:09,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-23 07:55:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-23 07:55:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:55:09,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:55:09,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:55:09,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:09,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:55:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:55:09,473 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-23 07:55:09,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:55:09,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689000925] [2020-12-23 07:55:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:55:09,487 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:55:09,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483851787] [2020-12-23 07:55:09,488 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 07:55:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:55:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-23 07:55:11,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:55:12,431 WARN L197 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-23 07:55:12,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:55:12,596 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 07:55:12,619 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 07:55:12,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689000925] [2020-12-23 07:55:12,653 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:55:12,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483851787] [2020-12-23 07:55:12,654 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 07:55:12,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:55:12,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:55:12,655 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:55:12,655 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:55:12,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:55:12,889 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:55:12,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:55:12 BoogieIcfgContainer [2020-12-23 07:55:12,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:55:12,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:55:12,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:55:12,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:55:12,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:54:59" (3/4) ... [2020-12-23 07:55:12,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:55:12,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:55:12,897 INFO L168 Benchmark]: Toolchain (without parser) took 14104.58 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 129.5 MB in the beginning and 97.8 MB in the end (delta: 31.7 MB). Peak memory consumption was 63.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,900 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 128.2 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:12,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.60 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 119.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.16 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,909 INFO L168 Benchmark]: Boogie Preprocessor took 31.25 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,912 INFO L168 Benchmark]: RCFGBuilder took 608.40 ms. Allocated memory is still 155.2 MB. Free memory was 116.2 MB in the beginning and 132.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,917 INFO L168 Benchmark]: TraceAbstraction took 13135.79 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 132.0 MB in the beginning and 98.2 MB in the end (delta: 33.8 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. [2020-12-23 07:55:12,917 INFO L168 Benchmark]: Witness Printer took 5.46 ms. Allocated memory is still 186.6 MB. Free memory was 98.2 MB in the beginning and 97.8 MB in the end (delta: 337.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:55:12,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory was 128.3 MB in the beginning and 128.2 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.60 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 119.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.16 ms. Allocated memory is still 155.2 MB. Free memory was 119.2 MB in the beginning and 117.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.25 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 608.40 ms. Allocated memory is still 155.2 MB. Free memory was 116.2 MB in the beginning and 132.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13135.79 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 132.0 MB in the beginning and 98.2 MB in the end (delta: 33.8 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. * Witness Printer took 5.46 ms. Allocated memory is still 186.6 MB. Free memory was 98.2 MB in the beginning and 97.8 MB in the end (delta: 337.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 13.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 917 SDslu, 316 SDs, 0 SdLazy, 538 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 30019 SizeOfPredicates, 44 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/25 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...