/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:45:58,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:45:58,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:45:58,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:45:58,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:45:58,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:45:58,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:45:58,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:45:58,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:45:58,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:45:58,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:45:58,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:45:58,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:45:58,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:45:58,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:45:58,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:45:58,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:45:58,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:45:58,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:45:58,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:45:58,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:45:58,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:45:58,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:45:58,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:45:58,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:45:58,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:45:58,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:45:58,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:45:58,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:45:58,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 06:45:58,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:45:58,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:45:58,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:45:58,741 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 [2020-08-19 06:45:58,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:45:58,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:45:58,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:45:58,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:45:58,780 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:45:58,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:45:58,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:45:58,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:45:58,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:45:58,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:45:58,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:45:58,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:45:58,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:45:58,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:45:58,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:45:58,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:45:58,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:45:58,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:45:58,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:45:58,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:45:58,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:45:58,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:45:58,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:45:58,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:45:58,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:45:58,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:45:58,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:45:58,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:45:58,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:45:58,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:45:59,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:45:59,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:45:59,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:45:59,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:45:59,147 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:45:59,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-08-19 06:45:59,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a8fdbf2b/640202d7e9b143c2a9435f32648cf50d/FLAGdefcf3ff2 [2020-08-19 06:45:59,663 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:45:59,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-08-19 06:45:59,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a8fdbf2b/640202d7e9b143c2a9435f32648cf50d/FLAGdefcf3ff2 [2020-08-19 06:46:00,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a8fdbf2b/640202d7e9b143c2a9435f32648cf50d [2020-08-19 06:46:00,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:46:00,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:46:00,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:46:00,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:46:00,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:46:00,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00, skipping insertion in model container [2020-08-19 06:46:00,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:46:00,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:46:00,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:46:00,307 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:46:00,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:46:00,367 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:46:00,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00 WrapperNode [2020-08-19 06:46:00,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:46:00,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:46:00,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:46:00,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:46:00,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (1/1) ... [2020-08-19 06:46:00,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:46:00,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:46:00,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:46:00,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:46:00,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (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 [2020-08-19 06:46:00,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:46:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:46:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-08-19 06:46:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-19 06:46:00,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:46:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:46:00,620 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:46:00,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 06:46:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-19 06:46:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:46:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:46:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:46:00,892 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:46:00,892 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 06:46:00,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:46:00 BoogieIcfgContainer [2020-08-19 06:46:00,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:46:00,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:46:00,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:46:00,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:46:00,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:46:00" (1/3) ... [2020-08-19 06:46:00,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f1fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:46:00, skipping insertion in model container [2020-08-19 06:46:00,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:46:00" (2/3) ... [2020-08-19 06:46:00,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f1fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:46:00, skipping insertion in model container [2020-08-19 06:46:00,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:46:00" (3/3) ... [2020-08-19 06:46:00,906 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2020-08-19 06:46:00,915 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:46:00,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:46:00,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:46:00,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:46:00,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:46:00,964 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:46:00,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:46:00,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:46:00,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:46:00,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:46:00,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:46:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-08-19 06:46:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 06:46:01,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:46:01,001 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] [2020-08-19 06:46:01,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:46:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:46:01,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1978899259, now seen corresponding path program 1 times [2020-08-19 06:46:01,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:46:01,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228096582] [2020-08-19 06:46:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:46:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:46:01,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:46:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:46:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:46:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:46:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 06:46:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:46:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:46:01,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228096582] [2020-08-19 06:46:01,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:46:01,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:46:01,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535796303] [2020-08-19 06:46:01,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:46:01,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:46:01,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:46:01,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:46:01,274 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-08-19 06:46:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:46:01,455 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-19 06:46:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:46:01,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-19 06:46:01,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:46:01,465 INFO L225 Difference]: With dead ends: 54 [2020-08-19 06:46:01,465 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 06:46:01,469 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 [2020-08-19 06:46:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 06:46:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 06:46:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 06:46:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-08-19 06:46:01,513 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2020-08-19 06:46:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:46:01,514 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-08-19 06:46:01,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:46:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-08-19 06:46:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 06:46:01,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:46:01,516 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] [2020-08-19 06:46:01,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:46:01,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:46:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:46:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash 749195959, now seen corresponding path program 1 times [2020-08-19 06:46:01,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:46:01,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57894192] [2020-08-19 06:46:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:46:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:46:01,591 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:46:01,591 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:46:01,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:46:01,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:46:01 BoogieIcfgContainer [2020-08-19 06:46:01,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:46:01,614 INFO L168 Benchmark]: Toolchain (without parser) took 1567.39 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.3 MB in the beginning and 123.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,615 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.02 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,617 INFO L168 Benchmark]: Boogie Preprocessor took 183.88 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 179.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,618 INFO L168 Benchmark]: RCFGBuilder took 340.30 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 163.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,619 INFO L168 Benchmark]: TraceAbstraction took 713.26 ms. Allocated memory is still 202.4 MB. Free memory was 162.5 MB in the beginning and 123.3 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:46:01,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.02 ms. Allocated memory is still 140.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 183.88 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 179.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.30 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 163.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 713.26 ms. Allocated memory is still 202.4 MB. Free memory was 162.5 MB in the beginning and 123.3 MB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = -1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 19 SDslu, 5 SDs, 0 SdLazy, 29 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1210 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...