/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/freire1_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:20,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:20,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:20,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:20,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:20,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:20,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:20,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:20,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:20,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:20,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:20,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:20,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:20,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:20,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:20,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:20,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:20,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:20,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:21,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:21,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:21,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:21,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:21,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:21,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 17:38:21,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 17:38:21,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 17:38:21,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 17:38:21,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 17:38:21,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 17:38:21,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:21,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:21,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:21,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:21,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:21,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:21,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:21,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:21,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:21,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:21,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:21,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:38:21,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:21,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:21,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:21,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:21,053 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:21,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:21,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:21,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:21,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:21,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:21,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:21,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:21,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:21,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:21,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:21,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:21,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:21,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:21,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:21,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:21,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:21,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:21,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:21,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:21,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:21,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:21,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:21,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:21,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:21,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:21,571 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:21,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-01-06 17:38:21,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c76fe6d11/45e2eeea6b0e4768a34e032b6116e786/FLAG4e13ad5e0 [2021-01-06 17:38:22,278 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:22,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-01-06 17:38:22,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c76fe6d11/45e2eeea6b0e4768a34e032b6116e786/FLAG4e13ad5e0 [2021-01-06 17:38:22,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c76fe6d11/45e2eeea6b0e4768a34e032b6116e786 [2021-01-06 17:38:22,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:22,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:22,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:22,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:22,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:22,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356e44f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22, skipping insertion in model container [2021-01-06 17:38:22,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:22,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:22,842 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/freire1_unwindbound1.c[712,725] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:38:22,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:22,879 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:22,895 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/freire1_unwindbound1.c[712,725] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:38:22,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:22,920 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:22,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22 WrapperNode [2021-01-06 17:38:22,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:22,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:22,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:22,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:22,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:22,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:22,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:22,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:22,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (1/1) ... [2021-01-06 17:38:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:22,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:22,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:22,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:22,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (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 [2021-01-06 17:38:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:38:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:38:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:38:23,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:38:23,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:38:23,386 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:38:23,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:23 BoogieIcfgContainer [2021-01-06 17:38:23,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:38:23,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:38:23,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:38:23,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:38:23,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:22" (1/3) ... [2021-01-06 17:38:23,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2907aa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:23, skipping insertion in model container [2021-01-06 17:38:23,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:22" (2/3) ... [2021-01-06 17:38:23,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2907aa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:23, skipping insertion in model container [2021-01-06 17:38:23,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:23" (3/3) ... [2021-01-06 17:38:23,398 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-01-06 17:38:23,408 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:38:23,414 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:38:23,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:38:23,511 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:38:23,511 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:38:23,511 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:38:23,512 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:38:23,512 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:38:23,512 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:38:23,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:38:23,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:38:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:38:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:38:23,548 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:23,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:38:23,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:23,564 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:38:23,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:23,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477243949] [2021-01-06 17:38:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:23,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:23,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:23,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:38:23,845 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:38:23,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:38:23,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:38:23 BoogieIcfgContainer [2021-01-06 17:38:23,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:38:23,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:38:23,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:38:23,876 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:38:23,877 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:23" (3/4) ... [2021-01-06 17:38:23,880 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:38:23,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:38:23,883 INFO L168 Benchmark]: Toolchain (without parser) took 1234.61 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 126.9 MB in the end (delta: 76.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:23,884 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:23,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:23,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.09 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:23,887 INFO L168 Benchmark]: Boogie Preprocessor took 26.73 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:23,888 INFO L168 Benchmark]: RCFGBuilder took 396.31 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 102.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:23,889 INFO L168 Benchmark]: TraceAbstraction took 484.54 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 127.5 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:23,890 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 126.9 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:23,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.77 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.09 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.73 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 396.31 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 102.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 484.54 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 127.5 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 5.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 126.9 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<1 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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...