/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:37,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:37,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:37,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:37,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:37,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:37,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:37,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:37,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:37,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:37,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:37,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:37,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:37,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:37,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:37,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:37,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:37,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:37,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:37,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:37,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:37,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:37,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:37,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:37,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:37,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:37,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:37,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:37,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:59:37,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:37,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:37,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:37,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:37,666 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:37,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:37,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:37,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:37,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:37,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:37,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:37,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:37,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:37,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:37,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:37,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:37,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:37,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:37,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:37,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:37,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:37,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:37,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:37,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:37,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:37,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:37,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:37,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:37,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:37,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:38,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:38,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:38,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:38,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:38,153 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:38,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-04 12:59:38,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3f652b1/87f39ba66de54e41b2525c33ccbf7572/FLAG608b24177 [2020-09-04 12:59:38,732 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:38,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2020-09-04 12:59:38,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3f652b1/87f39ba66de54e41b2525c33ccbf7572/FLAG608b24177 [2020-09-04 12:59:39,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c3f652b1/87f39ba66de54e41b2525c33ccbf7572 [2020-09-04 12:59:39,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:39,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:39,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:39,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:39,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:39,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39, skipping insertion in model container [2020-09-04 12:59:39,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:39,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:39,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:39,372 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:39,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:39,431 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:39,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39 WrapperNode [2020-09-04 12:59:39,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:39,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:39,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:39,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:39,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... [2020-09-04 12:59:39,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:39,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:39,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:39,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:39,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:39,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:39,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-04 12:59:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-04 12:59:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 12:59:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:59:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-04 12:59:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 12:59:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:59:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 12:59:40,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:40,016 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 12:59:40,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:40 BoogieIcfgContainer [2020-09-04 12:59:40,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:40,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:40,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:40,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:40,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:39" (1/3) ... [2020-09-04 12:59:40,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d7714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:40, skipping insertion in model container [2020-09-04 12:59:40,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:39" (2/3) ... [2020-09-04 12:59:40,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728d7714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:40, skipping insertion in model container [2020-09-04 12:59:40,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:40" (3/3) ... [2020-09-04 12:59:40,031 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-09-04 12:59:40,042 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:40,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:40,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:40,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:40,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:40,098 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:40,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:40,101 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:40,101 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:40,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:40,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:40,124 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 12:59:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 12:59:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:40,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:40,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-09-04 12:59:40,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:40,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530721873] [2020-09-04 12:59:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:40,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530721873] [2020-09-04 12:59:40,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:40,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:59:40,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987987857] [2020-09-04 12:59:40,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:59:40,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:40,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:59:40,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:59:40,446 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-04 12:59:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:40,684 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-09-04 12:59:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 12:59:40,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-04 12:59:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:40,699 INFO L225 Difference]: With dead ends: 79 [2020-09-04 12:59:40,700 INFO L226 Difference]: Without dead ends: 40 [2020-09-04 12:59:40,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:59:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-04 12:59:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-04 12:59:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 12:59:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-04 12:59:40,758 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-09-04 12:59:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:40,759 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-04 12:59:40,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:59:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-04 12:59:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 12:59:40,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:40,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:40,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:40,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:40,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-09-04 12:59:40,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:40,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352536708] [2020-09-04 12:59:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:40,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352536708] [2020-09-04 12:59:40,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:40,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:40,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341023467] [2020-09-04 12:59:40,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:40,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:40,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:40,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:40,950 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-04 12:59:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:41,205 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-04 12:59:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:59:41,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-04 12:59:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:41,210 INFO L225 Difference]: With dead ends: 59 [2020-09-04 12:59:41,210 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 12:59:41,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 12:59:41,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 12:59:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-04 12:59:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 12:59:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-04 12:59:41,225 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-09-04 12:59:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:41,225 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-04 12:59:41,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-04 12:59:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 12:59:41,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:41,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:41,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:59:41,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:41,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-09-04 12:59:41,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:41,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932262407] [2020-09-04 12:59:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:41,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932262407] [2020-09-04 12:59:41,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:41,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:41,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434841445] [2020-09-04 12:59:41,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:41,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:41,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:41,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:41,431 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-04 12:59:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:41,640 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-04 12:59:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:59:41,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-04 12:59:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:41,643 INFO L225 Difference]: With dead ends: 63 [2020-09-04 12:59:41,644 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 12:59:41,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 12:59:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 12:59:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-04 12:59:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 12:59:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-04 12:59:41,659 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-09-04 12:59:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:41,659 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-04 12:59:41,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-04 12:59:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 12:59:41,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:41,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:41,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 12:59:41,662 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:41,662 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-09-04 12:59:41,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:41,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589865895] [2020-09-04 12:59:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:41,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:41,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:41,742 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:59:41,742 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:59:41,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 12:59:41,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:41 BoogieIcfgContainer [2020-09-04 12:59:41,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:59:41,782 INFO L168 Benchmark]: Toolchain (without parser) took 2684.32 ms. Allocated memory was 140.0 MB in the beginning and 235.4 MB in the end (delta: 95.4 MB). Free memory was 103.5 MB in the beginning and 140.7 MB in the end (delta: -37.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:41,783 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 12:59:41,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.70 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 92.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:41,785 INFO L168 Benchmark]: Boogie Preprocessor took 128.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:41,786 INFO L168 Benchmark]: RCFGBuilder took 460.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 159.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:41,787 INFO L168 Benchmark]: TraceAbstraction took 1756.42 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.9 MB in the beginning and 140.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:41,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.70 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 92.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.09 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.28 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 159.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1756.42 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.9 MB in the beginning and 140.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L13] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578691, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578691, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...