/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=0.3 --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-benchs/cast_union_loose.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:12:22,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:12:22,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:12:22,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:12:22,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:12:22,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:12:22,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:12:22,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:12:22,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:12:22,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:12:22,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:12:22,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:12:22,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:12:22,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:12:22,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:12:22,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:12:22,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:12:22,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:12:22,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:12:22,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:12:22,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:12:22,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:12:22,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:12:22,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:12:22,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:12:22,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:12:22,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:12:22,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:12:22,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:12:22,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:12:22,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:12:22,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:12:22,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:12:22,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:12:22,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:12:22,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:12:22,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:12:22,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:12:22,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:12:22,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:12:22,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:12:22,238 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 12:12:22,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:12:22,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:12:22,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:12:22,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:12:22,264 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:12:22,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:12:22,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:12:22,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:12:22,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:12:22,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:12:22,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:12:22,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:12:22,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:12:22,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:12:22,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:12:22,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:12:22,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:12:22,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:12:22,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:12:22,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:12:22,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:12:22,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:12:22,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:12:22,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:12:22,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:12:22,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:12:22,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:12:22,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:12:22,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:12:22,269 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:12:22,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:12:22,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:12:22,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:12:22,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:12:22,742 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:12:22,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-09-25 12:12:22,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763093fc0/f656dfa0ce8040aeb0f55902f97ec2d8/FLAGd73e8b32d [2020-09-25 12:12:23,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:12:23,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-09-25 12:12:23,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763093fc0/f656dfa0ce8040aeb0f55902f97ec2d8/FLAGd73e8b32d [2020-09-25 12:12:23,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763093fc0/f656dfa0ce8040aeb0f55902f97ec2d8 [2020-09-25 12:12:23,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:12:23,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:12:23,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:12:23,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:12:23,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:12:23,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:12:23" (1/1) ... [2020-09-25 12:12:23,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bb1121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:23, skipping insertion in model container [2020-09-25 12:12:23,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:12:23" (1/1) ... [2020-09-25 12:12:23,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:12:23,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:12:24,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:12:24,017 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:12:24,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:12:24,069 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:12:24,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24 WrapperNode [2020-09-25 12:12:24,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:12:24,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:12:24,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:12:24,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:12:24,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (1/1) ... [2020-09-25 12:12:24,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:12:24,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:12:24,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:12:24,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:12:24,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (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 12:12:24,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:12:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:12:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 12:12:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:12:24,272 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-09-25 12:12:24,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:12:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:12:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:12:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:12:24,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 12:12:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:12:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-09-25 12:12:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:12:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:12:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:12:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 12:12:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:12:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:12:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:12:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:12:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 12:12:24,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:12:24,641 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:12:24,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:12:24 BoogieIcfgContainer [2020-09-25 12:12:24,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:12:24,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:12:24,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:12:24,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:12:24,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:12:23" (1/3) ... [2020-09-25 12:12:24,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:12:24, skipping insertion in model container [2020-09-25 12:12:24,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:24" (2/3) ... [2020-09-25 12:12:24,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102333a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:12:24, skipping insertion in model container [2020-09-25 12:12:24,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:12:24" (3/3) ... [2020-09-25 12:12:24,656 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-09-25 12:12:24,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:12:24,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:12:24,700 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:12:24,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:12:24,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:12:24,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:12:24,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:12:24,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:12:24,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:12:24,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:12:24,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:12:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 12:12:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 12:12:24,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:12:24,758 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 12:12:24,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:12:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:12:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1178751454, now seen corresponding path program 1 times [2020-09-25 12:12:24,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:12:24,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100271743] [2020-09-25 12:12:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:12:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:12:24,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:12:24,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:12:24,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:12:25,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:12:25 BoogieIcfgContainer [2020-09-25 12:12:25,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:12:25,026 INFO L168 Benchmark]: Toolchain (without parser) took 1344.30 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 145.8 MB in the end (delta: -44.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:25,027 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:12:25,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.05 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:25,029 INFO L168 Benchmark]: Boogie Preprocessor took 118.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 178.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:25,030 INFO L168 Benchmark]: RCFGBuilder took 456.50 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 161.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:25,031 INFO L168 Benchmark]: TraceAbstraction took 375.36 ms. Allocated memory is still 201.3 MB. Free memory was 160.3 MB in the beginning and 145.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:25,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 384.05 ms. Allocated memory is still 138.9 MB. Free memory was 101.0 MB in the beginning and 90.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 178.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.50 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 161.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 375.36 ms. Allocated memory is still 201.3 MB. Free memory was 160.3 MB in the beginning and 145.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 37, overapproximation of bitwiseXor at line 24, overapproximation of someBinaryArithmeticDOUBLEoperation at line 25. Possible FailurePath: [L30] int a; [L31] double r; [L33] a = __VERIFIER_nondet_int() [L34] CALL assume_abort_if_not(a >= -10000 && a <= 10000) [L9] COND FALSE !(!cond) [L34] RET assume_abort_if_not(a >= -10000 && a <= 10000) [L36] CALL, EXPR cast(a) [L20] union u x, y; [L21] x.i[0] = 0x43300000 [L22] EXPR x.i[0] [L22] y.i[0] = x.i[0] [L23] x.i[1] = 0x80000000 [L24] EXPR x.i[1] [L24] y.i[1] = i ^ x.i[1] [L25] EXPR y.d [L25] EXPR x.d [L25] return y.d - x.d; [L25] return y.d - x.d; [L25] return y.d - x.d; [L36] RET, EXPR cast(a) [L36] r = cast(a) [L37] CALL __VERIFIER_assert(r >= -10000. && r <= 10000.) [L11] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...