/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:03:37,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:03:37,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:03:37,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:03:37,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:03:37,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:03:37,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:03:37,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:03:37,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:03:37,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:03:37,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:03:37,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:03:37,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:03:37,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:03:37,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:03:37,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:03:37,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:03:37,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:03:37,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:03:37,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:03:37,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:03:37,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:03:37,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:03:37,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:03:37,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:03:37,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:03:37,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:03:37,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:03:37,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:03:37,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 21:03:37,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:03:37,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:03:37,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:03:37,851 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 [2020-08-18 21:03:37,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:03:37,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:03:37,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:03:37,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:03:37,875 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:03:37,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:03:37,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:03:37,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:03:37,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:03:37,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:03:37,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:03:37,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:03:37,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:03:37,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:03:37,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:03:37,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:03:37,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:03:37,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:03:37,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:03:37,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:03:37,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:03:37,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:03:37,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:03:37,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:03:37,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:03:37,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:03:37,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:03:37,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:03:37,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:03:37,880 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:03:38,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:03:38,185 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:03:38,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:03:38,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:03:38,191 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:03:38,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-18 21:03:38,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/141e437a4/d47810e979f147bc9b8cf2766cc60d45/FLAGd2cae7611 [2020-08-18 21:03:38,733 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:03:38,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-18 21:03:38,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/141e437a4/d47810e979f147bc9b8cf2766cc60d45/FLAGd2cae7611 [2020-08-18 21:03:39,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/141e437a4/d47810e979f147bc9b8cf2766cc60d45 [2020-08-18 21:03:39,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:03:39,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:03:39,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:39,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:03:39,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:03:39,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9b6dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39, skipping insertion in model container [2020-08-18 21:03:39,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:03:39,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:03:39,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:39,381 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:03:39,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:03:39,523 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:03:39,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39 WrapperNode [2020-08-18 21:03:39,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:03:39,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:03:39,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:03:39,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:03:39,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (1/1) ... [2020-08-18 21:03:39,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:03:39,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:03:39,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:03:39,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:03:39,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (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 [2020-08-18 21:03:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:03:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:03:39,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 21:03:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-18 21:03:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-18 21:03:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:03:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:03:39,630 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:03:39,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 21:03:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-18 21:03:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:03:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:03:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:03:40,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:03:40,105 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-18 21:03:40,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:40 BoogieIcfgContainer [2020-08-18 21:03:40,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:03:40,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:03:40,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:03:40,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:03:40,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:03:39" (1/3) ... [2020-08-18 21:03:40,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57674f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:40, skipping insertion in model container [2020-08-18 21:03:40,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:03:39" (2/3) ... [2020-08-18 21:03:40,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57674f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:03:40, skipping insertion in model container [2020-08-18 21:03:40,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:03:40" (3/3) ... [2020-08-18 21:03:40,119 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-08-18 21:03:40,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:03:40,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:03:40,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:03:40,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:03:40,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:03:40,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:03:40,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:03:40,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:03:40,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:03:40,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:03:40,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:03:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 21:03:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:03:40,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:40,200 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] [2020-08-18 21:03:40,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash -48260949, now seen corresponding path program 1 times [2020-08-18 21:03:40,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:40,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115923363] [2020-08-18 21:03:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:03:40,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115923363] [2020-08-18 21:03:40,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:03:40,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:03:40,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759578225] [2020-08-18 21:03:40,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:03:40,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:40,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:03:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:03:40,466 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-08-18 21:03:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:03:40,670 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2020-08-18 21:03:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:03:40,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:03:40,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:03:40,682 INFO L225 Difference]: With dead ends: 72 [2020-08-18 21:03:40,683 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 21:03:40,686 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 [2020-08-18 21:03:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 21:03:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-18 21:03:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-18 21:03:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-18 21:03:40,733 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-08-18 21:03:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:40,733 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-18 21:03:40,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:03:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-18 21:03:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:03:40,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:40,735 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, 1] [2020-08-18 21:03:40,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:03:40,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1916763246, now seen corresponding path program 1 times [2020-08-18 21:03:40,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:40,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136566450] [2020-08-18 21:03:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:03:40,899 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:03:40,899 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:03:40,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:03:40,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:03:40 BoogieIcfgContainer [2020-08-18 21:03:40,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:03:40,928 INFO L168 Benchmark]: Toolchain (without parser) took 1812.26 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.3 MB in the beginning and 109.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,929 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.52 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.1 MB in the beginning and 182.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,931 INFO L168 Benchmark]: Boogie Preprocessor took 51.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 179.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,932 INFO L168 Benchmark]: RCFGBuilder took 533.76 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 155.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,933 INFO L168 Benchmark]: TraceAbstraction took 813.37 ms. Allocated memory is still 203.9 MB. Free memory was 154.5 MB in the beginning and 109.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:03:40,937 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 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.52 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 103.1 MB in the beginning and 182.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 179.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 533.76 ms. Allocated memory is still 203.9 MB. Free memory was 179.6 MB in the beginning and 155.1 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 813.37 ms. Allocated memory is still 203.9 MB. Free memory was 154.5 MB in the beginning and 109.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=40occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 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...