/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:43:56,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:43:56,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:43:56,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:43:56,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:43:56,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:43:56,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:43:56,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:43:56,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:43:56,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:43:56,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:43:56,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:43:56,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:43:56,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:43:56,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:43:56,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:43:56,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:43:56,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:43:56,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:43:56,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:43:56,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:43:56,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:43:56,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:43:56,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:43:56,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:43:56,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:43:56,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:43:56,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:43:56,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:43:56,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 15:43:56,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:43:56,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:43:56,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:43:56,147 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 15:43:56,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:43:56,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:43:56,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:43:56,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:43:56,165 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:43:56,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:43:56,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:43:56,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:43:56,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:43:56,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:43:56,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:43:56,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:43:56,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:43:56,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:43:56,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:43:56,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:43:56,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:43:56,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:43:56,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:43:56,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:43:56,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:43:56,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:43:56,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:43:56,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:43:56,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:43:56,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:43:56,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:43:56,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:43:56,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:43:56,170 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 -> 2 [2020-07-21 15:43:56,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:43:56,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:43:56,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:43:56,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:43:56,463 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:43:56,464 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c [2020-07-21 15:43:56,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee12af0/d96bdd0a5b7c4b7fab0c81c041956af7/FLAG1b8331094 [2020-07-21 15:43:56,970 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:43:56,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-to-double2.c [2020-07-21 15:43:56,978 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee12af0/d96bdd0a5b7c4b7fab0c81c041956af7/FLAG1b8331094 [2020-07-21 15:43:57,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ee12af0/d96bdd0a5b7c4b7fab0c81c041956af7 [2020-07-21 15:43:57,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:43:57,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:43:57,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:43:57,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:43:57,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:43:57,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dee5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57, skipping insertion in model container [2020-07-21 15:43:57,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:43:57,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:43:57,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:43:57,615 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:43:57,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:43:57,647 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:43:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57 WrapperNode [2020-07-21 15:43:57,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:43:57,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:43:57,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:43:57,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:43:57,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (1/1) ... [2020-07-21 15:43:57,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:43:57,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:43:57,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:43:57,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:43:57,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (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 15:43:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:43:57,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:43:57,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:43:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:43:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:43:57,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:43:57,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:43:57,964 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:43:57,964 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 15:43:57,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:43:57 BoogieIcfgContainer [2020-07-21 15:43:57,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:43:57,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:43:57,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:43:57,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:43:57,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:43:57" (1/3) ... [2020-07-21 15:43:57,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f50503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:43:57, skipping insertion in model container [2020-07-21 15:43:57,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:43:57" (2/3) ... [2020-07-21 15:43:57,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f50503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:43:57, skipping insertion in model container [2020-07-21 15:43:57,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:43:57" (3/3) ... [2020-07-21 15:43:57,978 INFO L109 eAbstractionObserver]: Analyzing ICFG float-to-double2.c [2020-07-21 15:43:57,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:43:57,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:43:58,009 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:43:58,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:43:58,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:43:58,032 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:43:58,032 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:43:58,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:43:58,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:43:58,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:43:58,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:43:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-07-21 15:43:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-21 15:43:58,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:43:58,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:43:58,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:43:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:43:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2109216782, now seen corresponding path program 1 times [2020-07-21 15:43:58,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:43:58,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066219908] [2020-07-21 15:43:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 15:43:58,147 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:43:58,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:43:58,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:43:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:43:58,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:43:58,186 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:43:58,186 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:43:58,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:43:58,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:43:58 BoogieIcfgContainer [2020-07-21 15:43:58,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:43:58,410 INFO L168 Benchmark]: Toolchain (without parser) took 1001.40 ms. Allocated memory was 145.2 MB in the beginning and 216.5 MB in the end (delta: 71.3 MB). Free memory was 103.3 MB in the beginning and 177.3 MB in the end (delta: -74.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:43:58,411 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:43:58,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.55 ms. Allocated memory is still 145.2 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 15:43:58,413 INFO L168 Benchmark]: Boogie Preprocessor took 39.62 ms. Allocated memory was 145.2 MB in the beginning and 175.1 MB in the end (delta: 29.9 MB). Free memory was 92.8 MB in the beginning and 146.1 MB in the end (delta: -53.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:43:58,414 INFO L168 Benchmark]: RCFGBuilder took 279.54 ms. Allocated memory was 175.1 MB in the beginning and 216.5 MB in the end (delta: 41.4 MB). Free memory was 145.5 MB in the beginning and 192.6 MB in the end (delta: -47.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:43:58,415 INFO L168 Benchmark]: TraceAbstraction took 438.53 ms. Allocated memory is still 216.5 MB. Free memory was 192.6 MB in the beginning and 177.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:43:58,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.55 ms. Allocated memory is still 145.2 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.62 ms. Allocated memory was 145.2 MB in the beginning and 175.1 MB in the end (delta: 29.9 MB). Free memory was 92.8 MB in the beginning and 146.1 MB in the end (delta: -53.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.54 ms. Allocated memory was 175.1 MB in the beginning and 216.5 MB in the end (delta: 41.4 MB). Free memory was 145.5 MB in the beginning and 192.6 MB in the end (delta: -47.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 438.53 ms. Allocated memory is still 216.5 MB. Free memory was 192.6 MB in the beginning and 177.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 9, overapproximation of someUnaryDOUBLEoperation at line 6, overapproximation of someUnaryFLOAToperation at line 5. Possible FailurePath: [L5] float f = -0x1.0p-127f; [L6] double d = -0x1.0p-127; [L7] double fp = (double)f; VAL [f=0, fp=0] [L9] COND TRUE !(d == fp) VAL [f=0, fp=0] [L9] __VERIFIER_error() VAL [f=0, fp=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 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=13occurred 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, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 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...