/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:31,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:31,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:31,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:31,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:31,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:31,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:31,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:31,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:31,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:31,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:31,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:31,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:31,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:31,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:31,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:31,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:31,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:31,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:31,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:31,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:31,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:31,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:31,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:31,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:39:31,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:39:31,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:39:31,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:39:31,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:39:31,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:39:31,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:39:31,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:39:31,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:39:31,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:39:31,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:39:31,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:39:31,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:39:31,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:39:31,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:31,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:31,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:31,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 10:39:31,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:31,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:31,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:31,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:31,592 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:31,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:31,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:31,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:31,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:31,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:31,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:31,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:31,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:31,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:31,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:31,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:31,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:31,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:31,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:31,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:31,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:31,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:31,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:31,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:31,596 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 10:39:31,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:31,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:31,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:31,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:31,903 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:31,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-07-21 10:39:31,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c215f4b4/c1169c16f39d480d8e1019be16e918ed/FLAG94211f39a [2020-07-21 10:39:32,436 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:32,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/cast_union_tight.c [2020-07-21 10:39:32,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c215f4b4/c1169c16f39d480d8e1019be16e918ed/FLAG94211f39a [2020-07-21 10:39:32,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c215f4b4/c1169c16f39d480d8e1019be16e918ed [2020-07-21 10:39:32,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:32,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:32,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:32,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:32,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:32,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:32" (1/1) ... [2020-07-21 10:39:32,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6993c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:32, skipping insertion in model container [2020-07-21 10:39:32,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:32" (1/1) ... [2020-07-21 10:39:32,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:32,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:33,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:33,105 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:33,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:33,151 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:33,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33 WrapperNode [2020-07-21 10:39:33,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:33,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:33,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:33,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:33,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... [2020-07-21 10:39:33,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:33,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:33,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:33,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:33,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 10:39:33,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:39:33,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 10:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-07-21 10:39:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 10:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-07-21 10:39:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:39:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:39:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:39:33,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:39:33,561 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 10:39:33,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:33 BoogieIcfgContainer [2020-07-21 10:39:33,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:39:33,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:39:33,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:39:33,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:39:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:32" (1/3) ... [2020-07-21 10:39:33,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b10f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:33, skipping insertion in model container [2020-07-21 10:39:33,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:33" (2/3) ... [2020-07-21 10:39:33,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b10f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:33, skipping insertion in model container [2020-07-21 10:39:33,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:33" (3/3) ... [2020-07-21 10:39:33,577 INFO L109 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-07-21 10:39:33,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:39:33,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:39:33,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:39:33,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:39:33,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:39:33,663 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:39:33,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:39:33,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:39:33,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:39:33,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:39:33,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:39:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 10:39:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 10:39:33,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:33,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:39:33,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:33,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1809195508, now seen corresponding path program 1 times [2020-07-21 10:39:33,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:33,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644556186] [2020-07-21 10:39:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:33,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:33,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:33,857 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:39:33,858 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:39:34,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:34,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:34 BoogieIcfgContainer [2020-07-21 10:39:34,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:39:34,108 INFO L168 Benchmark]: Toolchain (without parser) took 1226.12 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 102.8 MB in the beginning and 142.0 MB in the end (delta: -39.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,109 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.81 ms. Allocated memory is still 144.7 MB. Free memory was 102.3 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,111 INFO L168 Benchmark]: Boogie Preprocessor took 122.36 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 91.6 MB in the beginning and 177.7 MB in the end (delta: -86.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,112 INFO L168 Benchmark]: RCFGBuilder took 291.16 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 162.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,113 INFO L168 Benchmark]: TraceAbstraction took 535.03 ms. Allocated memory is still 200.8 MB. Free memory was 162.3 MB in the beginning and 142.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:34,117 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.81 ms. Allocated memory is still 144.7 MB. Free memory was 102.3 MB in the beginning and 91.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.36 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 91.6 MB in the beginning and 177.7 MB in the end (delta: -86.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.16 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 162.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 535.03 ms. Allocated memory is still 200.8 MB. Free memory was 162.3 MB in the beginning and 142.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21, overapproximation of bitwiseXor at line 20. Possible FailurePath: [L26] int a; [L27] double r; [L29] a = __VERIFIER_nondet_int() [L31] CALL, EXPR cast(a) VAL [\old(i)=0] [L16] union u x, y; [L17] x.i[0] = 0x43300000 [L18] EXPR x.i[0] [L18] y.i[0] = x.i[0] [L19] x.i[1] = 0x80000000 [L20] EXPR x.i[1] [L20] y.i[1] = i ^ x.i[1] [L21] EXPR y.d [L21] EXPR x.d [L21] return y.d - x.d; [L21] return y.d - x.d; [L21] return y.d - x.d; VAL [\old(i)=0, i=0] [L31] RET, EXPR cast(a) VAL [a=0, cast(a)=13] [L31] r = cast(a) [L32] CALL __VERIFIER_assert(r == a) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=23occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 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...