/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:53:54,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:54,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:54,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:54,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:54,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:54,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:54,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:54,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:54,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:54,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:54,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:54,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:54,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:54,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:54,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:54,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:54,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:54,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:54,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:54,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:54,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:54,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:54,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:54,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:53:54,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:53:54,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:53:54,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:53:54,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:53:54,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 14:53:54,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:54,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:54,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:54,159 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 [2020-09-24 14:53:54,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:54,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:54,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:54,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:54,188 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:54,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:54,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:54,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:54,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:54,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:54,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:54,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:54,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:54,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:54,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:54,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:54,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:54,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:54,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:54,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:54,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:54,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:54,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:54,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:54,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:54,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:54,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:54,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:54,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:54,194 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:53:54,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:54,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:54,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:54,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:54,777 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:54,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-24 14:53:54,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc519b03/fda956b49eff4332b31829fa0e1e4fbe/FLAGd71214dcd [2020-09-24 14:53:55,412 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:55,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-09-24 14:53:55,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc519b03/fda956b49eff4332b31829fa0e1e4fbe/FLAGd71214dcd [2020-09-24 14:53:55,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fc519b03/fda956b49eff4332b31829fa0e1e4fbe [2020-09-24 14:53:55,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:55,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:55,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:55,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:55,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:55,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:55" (1/1) ... [2020-09-24 14:53:55,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1585d1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:55, skipping insertion in model container [2020-09-24 14:53:55,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:55" (1/1) ... [2020-09-24 14:53:55,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:55,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:56,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:56,151 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:56,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:56,323 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:56,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56 WrapperNode [2020-09-24 14:53:56,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:56,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:56,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:56,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:56,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (1/1) ... [2020-09-24 14:53:56,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:56,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:56,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:56,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:56,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (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 [2020-09-24 14:53:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 14:53:56,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 14:53:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-09-24 14:53:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 14:53:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 14:53:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 14:53:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-09-24 14:53:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:56,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:56,924 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 14:53:56,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:56 BoogieIcfgContainer [2020-09-24 14:53:56,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:56,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:56,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:56,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:56,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:55" (1/3) ... [2020-09-24 14:53:56,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:56, skipping insertion in model container [2020-09-24 14:53:56,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:56" (2/3) ... [2020-09-24 14:53:56,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:56, skipping insertion in model container [2020-09-24 14:53:56,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:56" (3/3) ... [2020-09-24 14:53:56,939 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-09-24 14:53:56,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:56,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:56,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:57,008 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:57,008 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:57,008 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:57,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:57,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:57,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:57,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:57,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-24 14:53:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 14:53:57,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:57,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:57,042 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1770687738, now seen corresponding path program 1 times [2020-09-24 14:53:57,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:57,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512312874] [2020-09-24 14:53:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:53:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 14:53:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:57,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512312874] [2020-09-24 14:53:57,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:57,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:53:57,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547570486] [2020-09-24 14:53:57,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:53:57,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:57,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:53:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:53:57,409 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-09-24 14:53:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:57,711 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-09-24 14:53:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:53:57,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 14:53:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:57,728 INFO L225 Difference]: With dead ends: 141 [2020-09-24 14:53:57,728 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 14:53:57,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:53:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 14:53:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 14:53:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 14:53:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-09-24 14:53:57,800 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 40 [2020-09-24 14:53:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:57,801 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-09-24 14:53:57,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:53:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-09-24 14:53:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 14:53:57,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:57,805 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, 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] [2020-09-24 14:53:57,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:53:57,806 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 524719120, now seen corresponding path program 1 times [2020-09-24 14:53:57,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:57,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774935441] [2020-09-24 14:53:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:53:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:57,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 14:53:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:58,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774935441] [2020-09-24 14:53:58,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:58,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:53:58,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711338389] [2020-09-24 14:53:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:53:58,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:53:58,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:53:58,078 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 6 states. [2020-09-24 14:53:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:58,302 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-24 14:53:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:53:58,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 14:53:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:58,307 INFO L225 Difference]: With dead ends: 88 [2020-09-24 14:53:58,307 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 14:53:58,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:53:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 14:53:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-24 14:53:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 14:53:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 14:53:58,334 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 54 [2020-09-24 14:53:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:58,336 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 14:53:58,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:53:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 14:53:58,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 14:53:58,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:58,341 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, 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, 1, 1, 1] [2020-09-24 14:53:58,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:53:58,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:58,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:58,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2023591653, now seen corresponding path program 1 times [2020-09-24 14:53:58,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:58,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512634049] [2020-09-24 14:53:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 14:53:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 14:53:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:58,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512634049] [2020-09-24 14:53:58,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:58,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:53:58,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850440525] [2020-09-24 14:53:58,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:53:58,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:53:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:53:58,576 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 14:53:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:58,780 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 14:53:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 14:53:58,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-24 14:53:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:58,783 INFO L225 Difference]: With dead ends: 92 [2020-09-24 14:53:58,783 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 14:53:58,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:53:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 14:53:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 14:53:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 14:53:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 14:53:58,796 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-24 14:53:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:58,796 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 14:53:58,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:53:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 14:53:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 14:53:58,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:58,799 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, 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, 1, 1, 1] [2020-09-24 14:53:58,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:53:58,799 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:58,800 INFO L82 PathProgramCache]: Analyzing trace with hash 425668389, now seen corresponding path program 1 times [2020-09-24 14:53:58,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:58,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96686830] [2020-09-24 14:53:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:53:58,830 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:53:58,831 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:53:58,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:53:58,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:53:58 BoogieIcfgContainer [2020-09-24 14:53:58,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:53:58,864 INFO L168 Benchmark]: Toolchain (without parser) took 3096.29 ms. Allocated memory was 109.1 MB in the beginning and 185.1 MB in the end (delta: 76.0 MB). Free memory was 73.5 MB in the beginning and 126.0 MB in the end (delta: -52.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,865 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 109.1 MB. Free memory was 91.2 MB in the beginning and 91.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.12 ms. Allocated memory was 109.1 MB in the beginning and 167.2 MB in the end (delta: 58.2 MB). Free memory was 72.9 MB in the beginning and 153.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,867 INFO L168 Benchmark]: Boogie Preprocessor took 77.16 ms. Allocated memory is still 167.2 MB. Free memory was 153.1 MB in the beginning and 150.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,868 INFO L168 Benchmark]: RCFGBuilder took 526.33 ms. Allocated memory is still 167.2 MB. Free memory was 150.5 MB in the beginning and 129.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,869 INFO L168 Benchmark]: TraceAbstraction took 1929.54 ms. Allocated memory was 167.2 MB in the beginning and 185.1 MB in the end (delta: 17.8 MB). Free memory was 128.6 MB in the beginning and 126.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:58,872 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 109.1 MB. Free memory was 91.2 MB in the beginning and 91.1 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 553.12 ms. Allocated memory was 109.1 MB in the beginning and 167.2 MB in the end (delta: 58.2 MB). Free memory was 72.9 MB in the beginning and 153.1 MB in the end (delta: -80.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.16 ms. Allocated memory is still 167.2 MB. Free memory was 153.1 MB in the beginning and 150.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 526.33 ms. Allocated memory is still 167.2 MB. Free memory was 150.5 MB in the beginning and 129.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1929.54 ms. Allocated memory was 167.2 MB in the beginning and 185.1 MB in the end (delta: 17.8 MB). Free memory was 128.6 MB in the beginning and 126.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 97 SDslu, 395 SDs, 0 SdLazy, 325 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 13222 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...