/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/freire2_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:34,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:34,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:34,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:34,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:34,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:34,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:34,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:34,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:34,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:34,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:34,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:34,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:34,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:34,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:34,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:34,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:34,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:34,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:34,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:35,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:35,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:35,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:35,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:35,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 17:38:35,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 17:38:35,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 17:38:35,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 17:38:35,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 17:38:35,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 17:38:35,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:35,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:35,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:35,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:35,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:35,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:35,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:35,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:35,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:35,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:35,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:35,023 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 17:38:35,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:35,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:35,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:35,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:35,057 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:35,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:35,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:35,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:35,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:35,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:35,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:35,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:35,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:35,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:35,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:35,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:35,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:35,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:35,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:35,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:35,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:35,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:35,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:35,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:35,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:35,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:35,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:35,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:35,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:35,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:35,525 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:35,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-01-06 17:38:35,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c757a7425/b0e94ba273df4bbf826a298f2b0bee44/FLAG522df52b1 [2021-01-06 17:38:36,245 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:36,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-01-06 17:38:36,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c757a7425/b0e94ba273df4bbf826a298f2b0bee44/FLAG522df52b1 [2021-01-06 17:38:36,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c757a7425/b0e94ba273df4bbf826a298f2b0bee44 [2021-01-06 17:38:36,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:36,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:36,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:36,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:36,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:36,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629b2f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36, skipping insertion in model container [2021-01-06 17:38:36,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:36,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:36,825 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/freire2_unwindbound10.c[709,722] 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[~s~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[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:38:36,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:36,868 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:36,884 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/freire2_unwindbound10.c[709,722] 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[~s~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[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:38:36,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:36,916 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:36,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36 WrapperNode [2021-01-06 17:38:36,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:36,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:36,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:36,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:36,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:36,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:36,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:36,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:36,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (1/1) ... [2021-01-06 17:38:36,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:36,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:36,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:36,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:36,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (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 17:38:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:38:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:38:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:38:37,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:38:37,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:38:37,510 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 17:38:37,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:37 BoogieIcfgContainer [2021-01-06 17:38:37,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:38:37,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:38:37,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:38:37,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:38:37,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:36" (1/3) ... [2021-01-06 17:38:37,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f0f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:37, skipping insertion in model container [2021-01-06 17:38:37,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:36" (2/3) ... [2021-01-06 17:38:37,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f0f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:37, skipping insertion in model container [2021-01-06 17:38:37,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:37" (3/3) ... [2021-01-06 17:38:37,523 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-01-06 17:38:37,531 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:38:37,536 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:38:37,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:38:37,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:38:37,591 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:38:37,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:38:37,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:38:37,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:38:37,592 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:38:37,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:38:37,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:38:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-01-06 17:38:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:38:37,616 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:37,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:38:37,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-01-06 17:38:37,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:37,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343051799] [2021-01-06 17:38:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:38:37,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343051799] [2021-01-06 17:38:37,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:37,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:38:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441547837] [2021-01-06 17:38:37,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:38:37,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:37,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:38:37,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:38:37,823 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2021-01-06 17:38:37,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:37,846 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-01-06 17:38:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:38:37,848 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-01-06 17:38:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:37,859 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:38:37,859 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 17:38:37,863 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 [2021-01-06 17:38:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 17:38:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-01-06 17:38:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 17:38:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-01-06 17:38:37,903 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-01-06 17:38:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:37,904 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-01-06 17:38:37,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:38:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-01-06 17:38:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:38:37,905 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:37,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:38:37,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:38:37,906 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:38:37,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:37,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433770498] [2021-01-06 17:38:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:37,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:37,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570545090] [2021-01-06 17:38:37,936 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 [2021-01-06 17:38:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:38,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:38,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:38,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:38:38,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:38:38,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:38:38,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:38:38 BoogieIcfgContainer [2021-01-06 17:38:38,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:38:38,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:38:38,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:38:38,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:38:38,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:37" (3/4) ... [2021-01-06 17:38:38,436 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:38:38,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:38:38,441 INFO L168 Benchmark]: Toolchain (without parser) took 1821.25 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 103.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,443 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:38,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.59 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,448 INFO L168 Benchmark]: Boogie Preprocessor took 28.97 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,449 INFO L168 Benchmark]: RCFGBuilder took 518.83 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 131.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,452 INFO L168 Benchmark]: TraceAbstraction took 915.45 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 103.9 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:38,454 INFO L168 Benchmark]: Witness Printer took 6.13 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 103.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:38,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.59 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.97 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.83 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 131.1 MB in the end (delta: -18.0 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 915.45 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 103.9 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Witness Printer took 6.13 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 103.3 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 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...