/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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-adbd35c [2020-10-14 23:13:50,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:13:50,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:13:50,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:13:50,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:13:50,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:13:50,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:13:50,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:13:50,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:13:50,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:13:50,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:13:50,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:13:50,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:13:50,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:13:50,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:13:50,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:13:50,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:13:50,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:13:50,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:13:50,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:13:50,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:13:50,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:13:50,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:13:50,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:13:50,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:13:50,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:13:50,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:13:50,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:13:50,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:13:50,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:13:50,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:13:50,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:13:50,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:13:50,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:13:50,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:13:50,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:13:50,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:13:50,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:13:50,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:13:50,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:13:50,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:13:50,666 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 [2020-10-14 23:13:50,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:13:50,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:13:50,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:13:50,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:13:50,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:13:50,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:13:50,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:13:50,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:13:50,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:13:50,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:13:50,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:13:50,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:13:50,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:13:50,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:13:50,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:13:50,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:13:50,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:13:50,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:13:50,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:13:50,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:13:50,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:13:50,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:13:50,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:13:50,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:13:50,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:13:50,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:13:50,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:13:50,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:13:50,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:13:50,704 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:13:51,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:13:51,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:13:51,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:13:51,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:13:51,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:13:51,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-10-14 23:13:51,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e128a0a4/569b09f8d1e841de975a786f19b9cb4e/FLAG72b1942b3 [2020-10-14 23:13:51,870 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:13:51,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/cast_union_loose.c [2020-10-14 23:13:51,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e128a0a4/569b09f8d1e841de975a786f19b9cb4e/FLAG72b1942b3 [2020-10-14 23:13:52,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e128a0a4/569b09f8d1e841de975a786f19b9cb4e [2020-10-14 23:13:52,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:13:52,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:13:52,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:13:52,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:13:52,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:13:52,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c25f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52, skipping insertion in model container [2020-10-14 23:13:52,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:13:52,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:13:52,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:13:52,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:13:52,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:13:52,568 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:13:52,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52 WrapperNode [2020-10-14 23:13:52,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:13:52,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:13:52,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:13:52,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:13:52,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (1/1) ... [2020-10-14 23:13:52,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:13:52,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:13:52,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:13:52,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:13:52,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (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 [2020-10-14 23:13:52,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:13:52,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:13:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:13:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:13:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-10-14 23:13:52,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:13:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:13:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:13:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:13:52,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:13:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:13:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-10-14 23:13:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:13:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:13:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:13:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:13:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:13:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:13:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:13:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:13:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:13:53,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:13:53,139 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 23:13:53,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:53 BoogieIcfgContainer [2020-10-14 23:13:53,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:13:53,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:13:53,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:13:53,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:13:53,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:13:52" (1/3) ... [2020-10-14 23:13:53,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371b1c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:53, skipping insertion in model container [2020-10-14 23:13:53,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:52" (2/3) ... [2020-10-14 23:13:53,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371b1c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:53, skipping insertion in model container [2020-10-14 23:13:53,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:53" (3/3) ... [2020-10-14 23:13:53,157 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-10-14 23:13:53,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:13:53,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:13:53,205 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:13:53,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:13:53,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:13:53,255 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:13:53,255 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:13:53,255 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:13:53,256 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:13:53,256 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:13:53,256 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:13:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-14 23:13:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:13:53,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:53,307 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] [2020-10-14 23:13:53,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:53,318 INFO L82 PathProgramCache]: Analyzing trace with hash -78739841, now seen corresponding path program 1 times [2020-10-14 23:13:53,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:53,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443668739] [2020-10-14 23:13:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:53,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:53,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:13:53,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 23:13:53,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:53,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:13:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:13:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:13:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:13:53,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:53,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:13:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:13:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:53,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:53,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:13:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:13:53,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:53,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 23:13:53,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:53,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:13:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:13:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:13:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:13:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:13:54,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:13:54,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:13:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 23:13:54,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:13:54,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:13:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:13:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:13:54,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443668739] [2020-10-14 23:13:54,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:13:54,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:13:54,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056850359] [2020-10-14 23:13:54,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:13:54,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:13:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:13:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:13:54,092 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-10-14 23:13:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:13:54,271 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-10-14 23:13:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:13:54,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-14 23:13:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:13:54,285 INFO L225 Difference]: With dead ends: 47 [2020-10-14 23:13:54,286 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 23:13:54,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:13:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 23:13:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 23:13:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 23:13:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-10-14 23:13:54,346 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 20 [2020-10-14 23:13:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:13:54,347 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-10-14 23:13:54,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:13:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-10-14 23:13:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:13:54,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:13:54,349 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] [2020-10-14 23:13:54,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:13:54,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:13:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:13:54,350 INFO L82 PathProgramCache]: Analyzing trace with hash 179425597, now seen corresponding path program 1 times [2020-10-14 23:13:54,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:13:54,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78615432] [2020-10-14 23:13:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:13:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:13:54,415 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:13:54,417 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:13:54,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:13:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:13:54 BoogieIcfgContainer [2020-10-14 23:13:54,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:13:54,463 INFO L168 Benchmark]: Toolchain (without parser) took 2260.40 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 100.5 MB in the beginning and 111.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,464 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.26 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 89.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,467 INFO L168 Benchmark]: Boogie Preprocessor took 155.76 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 89.9 MB in the beginning and 178.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,468 INFO L168 Benchmark]: RCFGBuilder took 418.95 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 162.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,469 INFO L168 Benchmark]: TraceAbstraction took 1312.86 ms. Allocated memory is still 201.3 MB. Free memory was 162.0 MB in the beginning and 111.2 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:13:54,474 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 118.8 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.26 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 89.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.76 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 89.9 MB in the beginning and 178.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.95 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 162.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1312.86 ms. Allocated memory is still 201.3 MB. Free memory was 162.0 MB in the beginning and 111.2 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 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 someBinaryArithmeticDOUBLEoperation at line 25, overapproximation of bitwiseXor at line 24. 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 22 SDslu, 5 SDs, 0 SdLazy, 17 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 760 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...