/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/float_double.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:06,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:06,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:06,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:06,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:06,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:06,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:06,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:06,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:06,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:06,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:06,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:06,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:06,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:06,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:06,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:06,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:06,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:06,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:06,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:06,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:06,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:06,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:06,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:06,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:27:06,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:27:06,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:27:06,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:27:06,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:27:06,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:27:06,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:27:06,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:27:06,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:27:06,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:27:06,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:27:06,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:27:06,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:27:06,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:27:06,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:06,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:06,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:06,726 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 [2020-07-20 16:27:06,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:06,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:06,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:06,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:06,743 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:06,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:06,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:06,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:06,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:06,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:06,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:06,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:06,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:06,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:06,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:06,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:06,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:06,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:06,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:06,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:06,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:06,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:06,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:06,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:06,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:06,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:06,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:06,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:06,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:06,748 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:27:07,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:07,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:07,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:07,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:07,055 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:07,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/float_double.c [2020-07-20 16:27:07,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc092a7/971ca3e4dcbf4249ac41f3316a6c24a5/FLAGef06a2ca2 [2020-07-20 16:27:07,525 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:07,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/float_double.c [2020-07-20 16:27:07,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc092a7/971ca3e4dcbf4249ac41f3316a6c24a5/FLAGef06a2ca2 [2020-07-20 16:27:07,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bdc092a7/971ca3e4dcbf4249ac41f3316a6c24a5 [2020-07-20 16:27:07,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:07,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:07,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:07,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:07,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:07,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:07" (1/1) ... [2020-07-20 16:27:07,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37db3cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:07, skipping insertion in model container [2020-07-20 16:27:07,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:07" (1/1) ... [2020-07-20 16:27:07,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:07,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:08,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:08,126 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:08,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:08,156 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:08,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08 WrapperNode [2020-07-20 16:27:08,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:08,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:08,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:08,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:08,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (1/1) ... [2020-07-20 16:27:08,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:08,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:08,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:08,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:08,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (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 [2020-07-20 16:27:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 16:27:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:08,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 16:27:08,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:08,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:08,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:08,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:08,494 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 16:27:08,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:08 BoogieIcfgContainer [2020-07-20 16:27:08,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:08,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:08,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:08,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:08,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:07" (1/3) ... [2020-07-20 16:27:08,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2acc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:08, skipping insertion in model container [2020-07-20 16:27:08,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:08" (2/3) ... [2020-07-20 16:27:08,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a2acc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:08, skipping insertion in model container [2020-07-20 16:27:08,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:08" (3/3) ... [2020-07-20 16:27:08,505 INFO L109 eAbstractionObserver]: Analyzing ICFG float_double.c [2020-07-20 16:27:08,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:08,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:08,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:08,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:08,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:08,562 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:08,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:08,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:08,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:08,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:08,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 16:27:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-20 16:27:08,586 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:08,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:27:08,588 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:08,594 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2020-07-20 16:27:08,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:08,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631012379] [2020-07-20 16:27:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 16:27:08,671 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:08,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:08,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:08,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:08,699 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:08,699 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:08,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:08,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:08 BoogieIcfgContainer [2020-07-20 16:27:08,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:08,939 INFO L168 Benchmark]: Toolchain (without parser) took 1023.07 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.9 MB in the beginning and 155.5 MB in the end (delta: -54.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,940 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.46 ms. Allocated memory is still 138.9 MB. Free memory was 100.5 MB in the beginning and 91.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,942 INFO L168 Benchmark]: Boogie Preprocessor took 116.00 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,943 INFO L168 Benchmark]: RCFGBuilder took 223.32 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 169.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,944 INFO L168 Benchmark]: TraceAbstraction took 437.90 ms. Allocated memory is still 201.3 MB. Free memory was 168.8 MB in the beginning and 155.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:08,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 119.1 MB in the beginning and 118.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.46 ms. Allocated memory is still 138.9 MB. Free memory was 100.5 MB in the beginning and 91.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.00 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 223.32 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 169.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 437.90 ms. Allocated memory is still 201.3 MB. Free memory was 168.8 MB in the beginning and 155.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L8] double x = 1e20 + 1.; [L9] float y = x; VAL [x=0, y=0] [L10] CALL __VERIFIER_assert(x != y) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=17occurred 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 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...