/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_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:41,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:41,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:41,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:41,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:41,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:41,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:41,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:41,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:41,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:41,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:41,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:41,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:41,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:41,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:41,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:41,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:41,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:41,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:41,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:41,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:41,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:41,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:41,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:41,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:38:41,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:41,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:41,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:41,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:41,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:41,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:41,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:41,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:41,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:41,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:41,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:41,577 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 17:38:41,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:41,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:41,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:41,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:41,611 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:41,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:41,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:41,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:41,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:41,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:41,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:41,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:41,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:41,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:41,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:41,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:41,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:41,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:41,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:41,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:41,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:42,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:42,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:42,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:42,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:42,072 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:42,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-01-06 17:38:42,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a965a8ee1/2677dd4081c948f08834200a8b5eaec3/FLAG3a7df9f8e [2021-01-06 17:38:42,788 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:42,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-01-06 17:38:42,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a965a8ee1/2677dd4081c948f08834200a8b5eaec3/FLAG3a7df9f8e [2021-01-06 17:38:43,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a965a8ee1/2677dd4081c948f08834200a8b5eaec3 [2021-01-06 17:38:43,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:43,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:43,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:43,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:43,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:43,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e9fa61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43, skipping insertion in model container [2021-01-06 17:38:43,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:43,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:43,385 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_valuebound20.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 17:38:43,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:43,457 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:43,475 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_valuebound20.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 17:38:43,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:43,539 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:43,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43 WrapperNode [2021-01-06 17:38:43,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:43,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:43,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:43,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:43,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:43,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:43,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:43,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:43,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (1/1) ... [2021-01-06 17:38:43,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:43,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:43,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:43,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:43,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (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 17:38:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:38:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:38:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:38:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:38:44,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:38:44,238 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 17:38:44,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:44 BoogieIcfgContainer [2021-01-06 17:38:44,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:38:44,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:38:44,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:38:44,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:38:44,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:43" (1/3) ... [2021-01-06 17:38:44,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0dc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:44, skipping insertion in model container [2021-01-06 17:38:44,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:43" (2/3) ... [2021-01-06 17:38:44,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a0dc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:44, skipping insertion in model container [2021-01-06 17:38:44,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:44" (3/3) ... [2021-01-06 17:38:44,250 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-01-06 17:38:44,259 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:38:44,263 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-01-06 17:38:44,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-01-06 17:38:44,320 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:38:44,320 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:38:44,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:38:44,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:38:44,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:38:44,321 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:38:44,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:38:44,321 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:38:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-01-06 17:38:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:38:44,343 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:44,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:44,344 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 17:38:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:38:44,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:44,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238649903] [2021-01-06 17:38:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:44,517 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 17:38:44,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238649903] [2021-01-06 17:38:44,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:44,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:38:44,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841321518] [2021-01-06 17:38:44,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:38:44,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:38:44,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:38:44,543 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-01-06 17:38:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:44,565 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-01-06 17:38:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:38:44,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:38:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:44,576 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:38:44,576 INFO L226 Difference]: Without dead ends: 29 [2021-01-06 17:38:44,579 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 17:38:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-06 17:38:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-01-06 17:38:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-01-06 17:38:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-01-06 17:38:44,620 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-01-06 17:38:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:44,620 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-01-06 17:38:44,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:38:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-01-06 17:38:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:38:44,621 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:44,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:44,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:38:44,622 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 17:38:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:44,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:38:44,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:44,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506779076] [2021-01-06 17:38:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:44,640 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:44,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291652069] [2021-01-06 17:38:44,641 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 17:38:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:44,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:38:44,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:38:44,792 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:38:44,792 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:38:45,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:38:45,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:38:45 BoogieIcfgContainer [2021-01-06 17:38:45,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:38:45,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:38:45,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:38:45,034 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:38:45,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:44" (3/4) ... [2021-01-06 17:38:45,038 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:38:45,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:38:45,041 INFO L168 Benchmark]: Toolchain (without parser) took 1900.49 ms. Allocated memory is still 175.1 MB. Free memory was 150.1 MB in the beginning and 128.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,041 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:45,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.80 ms. Allocated memory is still 175.1 MB. Free memory was 149.7 MB in the beginning and 139.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.82 ms. Allocated memory is still 175.1 MB. Free memory was 139.2 MB in the beginning and 137.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,044 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 175.1 MB. Free memory was 137.5 MB in the beginning and 136.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,045 INFO L168 Benchmark]: RCFGBuilder took 610.90 ms. Allocated memory is still 175.1 MB. Free memory was 136.3 MB in the beginning and 155.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,046 INFO L168 Benchmark]: TraceAbstraction took 790.89 ms. Allocated memory is still 175.1 MB. Free memory was 155.9 MB in the beginning and 129.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:38:45,046 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 175.1 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:38:45,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 396.80 ms. Allocated memory is still 175.1 MB. Free memory was 149.7 MB in the beginning and 139.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.82 ms. Allocated memory is still 175.1 MB. Free memory was 139.2 MB in the beginning and 137.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 175.1 MB. Free memory was 137.5 MB in the beginning and 136.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 610.90 ms. Allocated memory is still 175.1 MB. Free memory was 136.3 MB in the beginning and 155.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 790.89 ms. Allocated memory is still 175.1 MB. Free memory was 155.9 MB in the beginning and 129.2 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.58 ms. Allocated memory is still 175.1 MB. Free memory is still 128.7 MB. 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, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, 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=33occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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...