/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 true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:34,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:34,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:34,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:34,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:34,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:35,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:35,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:35,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:35,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:35,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:35,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:35,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:35,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:35,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:35,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:35,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:35,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:35,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:35,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:35,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:35,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:35,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:35,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:35,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:35,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:35,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:35,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:35,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:35,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:35,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:35,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:35,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:35,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:35,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:35,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:35,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:35,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:35,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:35,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:35,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:35,070 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 [2020-09-25 13:20:35,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:35,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:35,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:35,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:35,111 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:35,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:35,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:35,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:35,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:35,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:35,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:35,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:35,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:35,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:35,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:35,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:35,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:35,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:35,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:35,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:35,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:35,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:35,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:35,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:35,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:35,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:35,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:35,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:35,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:35,116 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:20:35,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:35,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:35,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:35,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:35,614 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:35,616 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 13:20:35,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edcb162be/45b4044ce16e4018a388c76a6ae64c48/FLAGfb82dd92d [2020-09-25 13:20:36,195 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:36,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-25 13:20:36,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edcb162be/45b4044ce16e4018a388c76a6ae64c48/FLAGfb82dd92d [2020-09-25 13:20:36,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/edcb162be/45b4044ce16e4018a388c76a6ae64c48 [2020-09-25 13:20:36,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:36,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:36,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:36,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:36,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:36,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:36" (1/1) ... [2020-09-25 13:20:36,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41357e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:36, skipping insertion in model container [2020-09-25 13:20:36,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:36" (1/1) ... [2020-09-25 13:20:36,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:36,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:36,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:37,005 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:37,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:37,184 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:37,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37 WrapperNode [2020-09-25 13:20:37,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:37,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:37,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:37,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:37,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (1/1) ... [2020-09-25 13:20:37,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:37,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:37,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:37,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:37,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (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 [2020-09-25 13:20:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 13:20:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-25 13:20:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 13:20:37,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 13:20:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 13:20:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-25 13:20:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 13:20:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-25 13:20:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:20:38,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:20:38,080 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-25 13:20:38,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:38 BoogieIcfgContainer [2020-09-25 13:20:38,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:20:38,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:20:38,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:20:38,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:20:38,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:36" (1/3) ... [2020-09-25 13:20:38,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1959a1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:38, skipping insertion in model container [2020-09-25 13:20:38,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:37" (2/3) ... [2020-09-25 13:20:38,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1959a1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:38, skipping insertion in model container [2020-09-25 13:20:38,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:38" (3/3) ... [2020-09-25 13:20:38,098 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-25 13:20:38,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:20:38,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:20:38,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:20:38,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:20:38,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:20:38,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:20:38,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:20:38,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:20:38,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:20:38,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:20:38,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:20:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-25 13:20:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 13:20:38,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:38,238 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] [2020-09-25 13:20:38,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-25 13:20:38,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:38,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010842841] [2020-09-25 13:20:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:20:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:20:38,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:38,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:38,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:20:38,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:38,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:20:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:38,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:38,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:20:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:20:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:38,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:38,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 13:20:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:38,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:38,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:20:38,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:20:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:20:38,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:38,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:20:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:20:38,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010842841] [2020-09-25 13:20:38,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:38,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:20:38,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883842582] [2020-09-25 13:20:38,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:20:38,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:38,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:20:38,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:20:38,917 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-25 13:20:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:39,503 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-25 13:20:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:20:39,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 13:20:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:39,531 INFO L225 Difference]: With dead ends: 415 [2020-09-25 13:20:39,531 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 13:20:39,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:20:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 13:20:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-25 13:20:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 13:20:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-25 13:20:39,603 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-25 13:20:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:39,603 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-25 13:20:39,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:20:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-25 13:20:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:20:39,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:39,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:39,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:20:39,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:39,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-25 13:20:39,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:39,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549965680] [2020-09-25 13:20:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:20:39,750 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:20:39,751 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:20:39,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:20:39,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:20:39 BoogieIcfgContainer [2020-09-25 13:20:39,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:20:39,798 INFO L168 Benchmark]: Toolchain (without parser) took 3238.78 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 102.7 MB in the beginning and 131.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,799 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.21 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 178.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,801 INFO L168 Benchmark]: Boogie Preprocessor took 74.50 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,802 INFO L168 Benchmark]: RCFGBuilder took 826.71 ms. Allocated memory is still 203.4 MB. Free memory was 175.4 MB in the beginning and 127.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,803 INFO L168 Benchmark]: TraceAbstraction took 1701.67 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 127.3 MB in the beginning and 131.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:39,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.21 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 178.2 MB in the end (delta: -76.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.50 ms. Allocated memory is still 203.4 MB. Free memory was 178.2 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 826.71 ms. Allocated memory is still 203.4 MB. Free memory was 175.4 MB in the beginning and 127.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1701.67 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 127.3 MB in the beginning and 131.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 0.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...