/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_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:36,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:36,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:36,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:36,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:36,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:36,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:36,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:36,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:36,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:36,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:36,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:36,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:36,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:36,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:36,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:36,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:36,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:36,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:36,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:36,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:36,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:36,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:36,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:36,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:36,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:36,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:36,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:36,627 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 12:59:36,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:36,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:36,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:36,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:36,681 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:36,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:36,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:36,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:36,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:36,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:36,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:36,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:36,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:36,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:36,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:36,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:36,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:36,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:36,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:36,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:36,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:36,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:36,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:36,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:36,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:36,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:36,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:36,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:36,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:36,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:37,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:37,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:37,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:37,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:37,151 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:37,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-09-04 12:59:37,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4da2278e0/622f15a089704cd7b2f9a843b9452420/FLAG2ef01ea91 [2020-09-04 12:59:37,800 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:37,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-09-04 12:59:37,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4da2278e0/622f15a089704cd7b2f9a843b9452420/FLAG2ef01ea91 [2020-09-04 12:59:38,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4da2278e0/622f15a089704cd7b2f9a843b9452420 [2020-09-04 12:59:38,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:38,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:38,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:38,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:38,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:38,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38, skipping insertion in model container [2020-09-04 12:59:38,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:38,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:38,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:38,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:38,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:38,502 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:38,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38 WrapperNode [2020-09-04 12:59:38,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:38,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:38,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:38,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:38,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (1/1) ... [2020-09-04 12:59:38,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:38,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:38,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:38,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:38,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (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 12:59:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:38,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-04 12:59:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-04 12:59:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-04 12:59:38,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:38,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 12:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-04 12:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 12:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-04 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-04 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:59:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 12:59:39,078 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:39,079 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 12:59:39,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:39 BoogieIcfgContainer [2020-09-04 12:59:39,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:39,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:39,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:39,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:39,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:38" (1/3) ... [2020-09-04 12:59:39,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255e3d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:39, skipping insertion in model container [2020-09-04 12:59:39,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:38" (2/3) ... [2020-09-04 12:59:39,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255e3d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:39, skipping insertion in model container [2020-09-04 12:59:39,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:39" (3/3) ... [2020-09-04 12:59:39,095 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-09-04 12:59:39,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:39,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:39,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:39,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:39,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:39,172 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:39,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:39,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:39,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:39,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:39,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 12:59:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 12:59:39,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:39,204 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 12:59:39,205 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:39,212 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-09-04 12:59:39,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:39,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570084237] [2020-09-04 12:59:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:39,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:39,534 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 12:59:39,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570084237] [2020-09-04 12:59:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:59:39,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789330765] [2020-09-04 12:59:39,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:59:39,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:39,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:59:39,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:59:39,567 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-04 12:59:39,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:39,805 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-09-04 12:59:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 12:59:39,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-04 12:59:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:39,821 INFO L225 Difference]: With dead ends: 79 [2020-09-04 12:59:39,822 INFO L226 Difference]: Without dead ends: 40 [2020-09-04 12:59:39,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:59:39,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-04 12:59:39,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-04 12:59:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 12:59:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-09-04 12:59:39,886 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-09-04 12:59:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-09-04 12:59:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:59:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-09-04 12:59:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-04 12:59:39,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:39,890 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 12:59:39,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:39,890 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:39,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:39,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-09-04 12:59:39,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:39,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223596144] [2020-09-04 12:59:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,100 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 12:59:40,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223596144] [2020-09-04 12:59:40,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:40,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:40,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129396313] [2020-09-04 12:59:40,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:40,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:40,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:40,105 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-09-04 12:59:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:40,390 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-04 12:59:40,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:59:40,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-04 12:59:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:40,395 INFO L225 Difference]: With dead ends: 59 [2020-09-04 12:59:40,395 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 12:59:40,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 12:59:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 12:59:40,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-04 12:59:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 12:59:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-04 12:59:40,410 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-09-04 12:59:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:40,410 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-04 12:59:40,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-04 12:59:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 12:59:40,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:40,412 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 12:59:40,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:59:40,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-09-04 12:59:40,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:40,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711050147] [2020-09-04 12:59:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 12:59:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:40,587 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 12:59:40,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711050147] [2020-09-04 12:59:40,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:40,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:40,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809799480] [2020-09-04 12:59:40,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:40,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:40,590 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-09-04 12:59:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:40,805 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-04 12:59:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 12:59:40,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-04 12:59:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:40,807 INFO L225 Difference]: With dead ends: 63 [2020-09-04 12:59:40,807 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 12:59:40,808 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 12:59:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 12:59:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-04 12:59:40,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 12:59:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-04 12:59:40,819 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-09-04 12:59:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:40,819 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-04 12:59:40,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-04 12:59:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 12:59:40,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:40,821 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 12:59:40,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 12:59:40,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-09-04 12:59:40,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:40,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805195442] [2020-09-04 12:59:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:40,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:40,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:40,892 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:59:40,892 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:59:40,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 12:59:40,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:40 BoogieIcfgContainer [2020-09-04 12:59:40,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:59:40,938 INFO L168 Benchmark]: Toolchain (without parser) took 2790.36 ms. Allocated memory was 145.8 MB in the beginning and 233.3 MB in the end (delta: 87.6 MB). Free memory was 105.1 MB in the beginning and 138.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:40,939 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 12:59:40,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.45 ms. Allocated memory is still 145.8 MB. Free memory was 104.9 MB in the beginning and 94.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:40,941 INFO L168 Benchmark]: Boogie Preprocessor took 142.46 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 94.0 MB in the beginning and 182.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:40,942 INFO L168 Benchmark]: RCFGBuilder took 438.72 ms. Allocated memory is still 205.5 MB. Free memory was 182.8 MB in the beginning and 162.8 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:40,943 INFO L168 Benchmark]: TraceAbstraction took 1848.64 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 162.2 MB in the beginning and 138.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:40,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.45 ms. Allocated memory is still 145.8 MB. Free memory was 104.9 MB in the beginning and 94.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.46 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 94.0 MB in the beginning and 182.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.72 ms. Allocated memory is still 205.5 MB. Free memory was 182.8 MB in the beginning and 162.8 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1848.64 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 162.2 MB in the beginning and 138.2 MB in the end (delta: 24.0 MB). Peak memory consumption was 51.8 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 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578691] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [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)=0, w=4286578689, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578691, __fpclassify_float(x)=0, x=0, y=4286578691] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=0, \old(y)=4286578691, \result=4286578691, x=0, y=4286578691] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578691, x=0, y=4286578691] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578691, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578691] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578691, x=0, y=4286578691] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, 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, 0.4s 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...