/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_FUNCTIONS --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-newlib/double_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:57,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:57,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:57,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:57,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:57,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:57,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:57,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:57,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:57,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:57,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:57,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:57,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:57,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:57,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:57,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:57,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:57,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:57,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:57,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:57,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:57,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:57,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:57,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:57,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:57,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:57,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:57,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:57,748 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 13:05:57,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:57,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:57,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:57,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:57,774 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:57,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:57,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:57,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:57,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:57,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:57,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:57,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:57,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:57,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:57,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:57,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:57,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:57,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:57,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:57,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:57,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:57,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:57,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:57,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:57,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:57,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:57,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:57,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:57,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:57,781 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_FUNCTIONS 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 13:05:58,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:58,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:58,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:58,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:58,121 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:58,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-07-20 13:05:58,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7229a8f4/37a8285e17714e4d9ed5ee47310f8770/FLAGa1b08413e [2020-07-20 13:05:58,641 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:58,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-07-20 13:05:58,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7229a8f4/37a8285e17714e4d9ed5ee47310f8770/FLAGa1b08413e [2020-07-20 13:05:59,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7229a8f4/37a8285e17714e4d9ed5ee47310f8770 [2020-07-20 13:05:59,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:59,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:59,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:59,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:59,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:59,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a32e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59, skipping insertion in model container [2020-07-20 13:05:59,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:59,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:59,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:59,286 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:59,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:59,453 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:59,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59 WrapperNode [2020-07-20 13:05:59,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:59,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:59,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:59,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:59,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:59,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:59,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (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 13:05:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:05:59,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 13:05:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-07-20 13:05:59,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:59,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:05:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:05:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 13:05:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-07-20 13:05:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:05:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:59,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:05:59,969 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 13:05:59,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:59 BoogieIcfgContainer [2020-07-20 13:05:59,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:05:59,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:05:59,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:05:59,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:05:59,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:59" (1/3) ... [2020-07-20 13:05:59,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4d0345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:59, skipping insertion in model container [2020-07-20 13:05:59,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (2/3) ... [2020-07-20 13:05:59,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4d0345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:59, skipping insertion in model container [2020-07-20 13:05:59,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:59" (3/3) ... [2020-07-20 13:05:59,983 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-07-20 13:05:59,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:00,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:00,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:00,039 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:00,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:00,039 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:00,039 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:00,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:00,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:00,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:00,040 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 13:06:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:00,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1251720270, now seen corresponding path program 1 times [2020-07-20 13:06:00,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770695842] [2020-07-20 13:06:00,086 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 13:06:00,199 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:00,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:00,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:00,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:00,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:00,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770695842] [2020-07-20 13:06:00,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:00,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:00,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538335134] [2020-07-20 13:06:00,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:00,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:00,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:00,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,256 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-20 13:06:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:00,284 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-20 13:06:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:00,286 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-20 13:06:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:00,297 INFO L225 Difference]: With dead ends: 71 [2020-07-20 13:06:00,297 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 13:06:00,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 13:06:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 13:06:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 13:06:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-20 13:06:00,349 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-20 13:06:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:00,349 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-20 13:06:00,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-20 13:06:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 13:06:00,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1491407075, now seen corresponding path program 1 times [2020-07-20 13:06:00,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10598426] [2020-07-20 13:06:00,572 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,659 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:00,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:00,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:00,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:00,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:00,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:00,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10598426] [2020-07-20 13:06:00,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:00,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:00,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238691362] [2020-07-20 13:06:00,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:00,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:00,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:00,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:00,710 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-20 13:06:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:00,742 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-20 13:06:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:00,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-20 13:06:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:00,745 INFO L225 Difference]: With dead ends: 51 [2020-07-20 13:06:00,746 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 13:06:00,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 13:06:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 13:06:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:00,757 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-20 13:06:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:00,758 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:00,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:00,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 13:06:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1711130393, now seen corresponding path program 1 times [2020-07-20 13:06:00,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130246540] [2020-07-20 13:06:00,976 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,032 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:01,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:01,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:01,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:01,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:01,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130246540] [2020-07-20 13:06:01,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:01,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:01,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336704985] [2020-07-20 13:06:01,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:01,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:01,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:01,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:01,067 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 13:06:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:01,089 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 13:06:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:01,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 13:06:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:01,092 INFO L225 Difference]: With dead ends: 55 [2020-07-20 13:06:01,092 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:06:01,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:06:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-20 13:06:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:01,101 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-20 13:06:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:01,101 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:01,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 13:06:01,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:01,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:01,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:01,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1076285094, now seen corresponding path program 1 times [2020-07-20 13:06:01,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:01,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025913470] [2020-07-20 13:06:01,321 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,401 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:01,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:01,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:01,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:01,444 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:01,444 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:01,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:01 BoogieIcfgContainer [2020-07-20 13:06:01,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:01,694 INFO L168 Benchmark]: Toolchain (without parser) took 2671.12 ms. Allocated memory was 143.7 MB in the beginning and 232.3 MB in the end (delta: 88.6 MB). Free memory was 100.7 MB in the beginning and 195.1 MB in the end (delta: -94.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:01,695 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 143.7 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.53 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 179.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,697 INFO L168 Benchmark]: Boogie Preprocessor took 57.40 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,698 INFO L168 Benchmark]: RCFGBuilder took 461.12 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 158.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,699 INFO L168 Benchmark]: TraceAbstraction took 1716.38 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 157.8 MB in the beginning and 195.1 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:01,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 143.7 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.53 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.3 MB in the beginning and 179.8 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.40 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 177.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.12 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 158.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1716.38 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 157.8 MB in the beginning and 195.1 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=3, \old(y)=4] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=3] [L18] __uint32_t msw, lsw; VAL [\old(x)=3, x=3] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=3, lsw=-4294967295, msw=-2147483649, x=3] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=-4294967295, msw=-2147483649, x=3] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=-4294967295, msw=-2147483649, x=3] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=3, \result=0, lsw=-4294967295, msw=-2147483649, x=3] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_double(x)=0, x=3, y=4] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L63] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4, x=3, y=4] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4] [L16] return x != x; VAL [\old(x)=4, \result=0, x=4] [L65] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4, x=3, y=4] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 113 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...