/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 BIGGEST_EQUIVALENCE_CLASS --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/floats-cbmc-regression/float-no-simp6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:01:26,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:01:26,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:01:26,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:01:26,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:01:26,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:01:26,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:01:26,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:01:26,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:01:26,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:01:26,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:01:26,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:01:26,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:01:26,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:01:26,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:01:26,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:01:26,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:01:26,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:01:26,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:01:26,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:01:26,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:01:26,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:01:26,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:01:26,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:01:26,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:01:26,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:01:26,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:01:26,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:01:26,973 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 22:01:26,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:01:26,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:01:26,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:01:26,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:01:26,995 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:01:26,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:01:26,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:01:26,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:01:26,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:01:26,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:01:26,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:01:26,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:01:26,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:01:26,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:01:26,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:01:26,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:01:26,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:01:26,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:01:26,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:01:27,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:01:27,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:01:27,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:01:27,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:01:27,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:01:27,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:01:27,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:01:27,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:27,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:01:27,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:01:27,002 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 22:01:27,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:01:27,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:01:27,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:01:27,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:01:27,345 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:01:27,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-07-21 22:01:27,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab756eb/c828f428036d407db876d550211201b3/FLAGb55a2fc51 [2020-07-21 22:01:27,871 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:01:27,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-07-21 22:01:27,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab756eb/c828f428036d407db876d550211201b3/FLAGb55a2fc51 [2020-07-21 22:01:28,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ab756eb/c828f428036d407db876d550211201b3 [2020-07-21 22:01:28,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:01:28,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:01:28,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:28,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:01:28,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:01:28,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423f00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28, skipping insertion in model container [2020-07-21 22:01:28,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:01:28,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:01:28,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:28,502 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:01:28,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:28,537 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:01:28,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28 WrapperNode [2020-07-21 22:01:28,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:28,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:01:28,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:01:28,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:01:28,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (1/1) ... [2020-07-21 22:01:28,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:01:28,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:01:28,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:01:28,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:01:28,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (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 22:01:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:01:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:01:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2020-07-21 22:01:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2020-07-21 22:01:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2020-07-21 22:01:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:01:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:01:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2020-07-21 22:01:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2020-07-21 22:01:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2020-07-21 22:01:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:01:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:01:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:01:28,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:01:28,887 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:01:28,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:01:28 BoogieIcfgContainer [2020-07-21 22:01:28,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:01:28,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:01:28,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:01:28,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:01:28,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:01:28" (1/3) ... [2020-07-21 22:01:28,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7606bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:01:28, skipping insertion in model container [2020-07-21 22:01:28,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:28" (2/3) ... [2020-07-21 22:01:28,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7606bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:01:28, skipping insertion in model container [2020-07-21 22:01:28,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:01:28" (3/3) ... [2020-07-21 22:01:28,929 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-07-21 22:01:28,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:01:28,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 22:01:28,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 22:01:29,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:01:29,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:01:29,025 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:01:29,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:01:29,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:01:29,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:01:29,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:01:29,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:01:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-21 22:01:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 22:01:29,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:01:29,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:01:29,053 INFO L427 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:01:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:01:29,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2020-07-21 22:01:29,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:01:29,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454187775] [2020-07-21 22:01:29,068 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 [2020-07-21 22:01:29,117 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:01:29,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:01:29,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:01:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:01:29,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:01:29,143 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:01:29,144 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:01:29,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:29,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:01:29 BoogieIcfgContainer [2020-07-21 22:01:29,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:01:29,382 INFO L168 Benchmark]: Toolchain (without parser) took 1132.06 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 154.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,383 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.86 ms. Allocated memory is still 143.7 MB. Free memory was 101.3 MB in the beginning and 89.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,385 INFO L168 Benchmark]: Boogie Preprocessor took 25.18 ms. Allocated memory is still 143.7 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,386 INFO L168 Benchmark]: RCFGBuilder took 329.33 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 88.4 MB in the beginning and 168.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,387 INFO L168 Benchmark]: TraceAbstraction took 474.08 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 154.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:01:29,391 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.86 ms. Allocated memory is still 143.7 MB. Free memory was 101.3 MB in the beginning and 89.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.18 ms. Allocated memory is still 143.7 MB. Free memory was 89.8 MB in the beginning and 88.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.33 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 88.4 MB in the beginning and 168.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 474.08 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 154.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L47] CALL multiply() [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L23] COND TRUE !(res == 0x1.0p-126f) VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] [L23] __VERIFIER_error() VAL [f1=1/2, f2=16777215/713623846352979940529142984724747568191373312] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 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=29occurred 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 4 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...