/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 2 -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 [2020-07-21 12:55:26,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:26,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:26,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:26,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:26,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:26,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:26,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:26,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:26,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:26,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:26,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:26,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:26,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:26,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:26,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:26,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:26,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:26,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:26,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:26,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:26,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:26,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:26,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:26,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:26,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:26,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:26,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:26,857 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 12:55:26,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:26,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:26,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:26,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:26,900 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:26,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:26,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:26,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:26,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:26,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:26,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:26,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:26,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:26,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:26,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:26,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:26,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:26,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:26,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:26,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:26,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:26,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:26,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:26,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:26,905 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 -> 2 [2020-07-21 12:55:27,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:27,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:27,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:27,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:27,177 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:27,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-07-21 12:55:27,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3601fd5/dae06c7f97594248be6ecc96cf3f5abc/FLAGc68df89f5 [2020-07-21 12:55:27,720 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:27,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-07-21 12:55:27,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3601fd5/dae06c7f97594248be6ecc96cf3f5abc/FLAGc68df89f5 [2020-07-21 12:55:28,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a3601fd5/dae06c7f97594248be6ecc96cf3f5abc [2020-07-21 12:55:28,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:28,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:28,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:28,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:28,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:28,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77066a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28, skipping insertion in model container [2020-07-21 12:55:28,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:28,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:28,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:28,362 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:28,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:28,564 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:28,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28 WrapperNode [2020-07-21 12:55:28,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:28,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:28,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:28,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:28,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (1/1) ... [2020-07-21 12:55:28,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:28,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:28,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:28,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:28,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (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 12:55:28,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 12:55:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-21 12:55:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-07-21 12:55:28,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:28,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:28,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:28,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:29,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:29,006 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 12:55:29,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:29 BoogieIcfgContainer [2020-07-21 12:55:29,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:29,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:29,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:29,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:29,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:28" (1/3) ... [2020-07-21 12:55:29,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c332c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:29, skipping insertion in model container [2020-07-21 12:55:29,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:28" (2/3) ... [2020-07-21 12:55:29,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c332c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:29, skipping insertion in model container [2020-07-21 12:55:29,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:29" (3/3) ... [2020-07-21 12:55:29,020 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-07-21 12:55:29,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:29,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:29,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:29,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:29,100 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:29,100 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:29,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:29,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:29,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:29,101 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:29,101 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-21 12:55:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 12:55:29,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:29,128 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] [2020-07-21 12:55:29,128 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:29,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:29,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1251720270, now seen corresponding path program 1 times [2020-07-21 12:55:29,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:29,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606815124] [2020-07-21 12:55:29,144 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 12:55:29,256 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:29,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:29,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:29,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:29,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:29,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606815124] [2020-07-21 12:55:29,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:29,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:29,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014936513] [2020-07-21 12:55:29,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:29,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:29,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:29,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:29,314 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-21 12:55:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:29,339 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-21 12:55:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:29,340 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-21 12:55:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:29,349 INFO L225 Difference]: With dead ends: 71 [2020-07-21 12:55:29,349 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 12:55:29,352 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 [2020-07-21 12:55:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 12:55:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-21 12:55:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 12:55:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-21 12:55:29,398 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-21 12:55:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:29,399 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-21 12:55:29,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-21 12:55:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 12:55:29,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:29,402 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] [2020-07-21 12:55:29,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,616 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1491407075, now seen corresponding path program 1 times [2020-07-21 12:55:29,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:29,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818308547] [2020-07-21 12:55:29,619 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 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 [2020-07-21 12:55:29,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:29,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:29,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:55:29,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:29,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:29,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818308547] [2020-07-21 12:55:29,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:29,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:55:29,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163259444] [2020-07-21 12:55:29,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:55:29,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:29,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:55:29,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:29,826 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-21 12:55:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:29,861 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-21 12:55:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:55:29,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 12:55:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:29,865 INFO L225 Difference]: With dead ends: 51 [2020-07-21 12:55:29,865 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 12:55:29,866 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 [2020-07-21 12:55:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 12:55:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 12:55:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 12:55:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 12:55:29,876 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-21 12:55:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:29,877 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 12:55:29,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:55:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 12:55:29,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 12:55:29,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:29,879 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] [2020-07-21 12:55:30,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:30,095 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1711130393, now seen corresponding path program 1 times [2020-07-21 12:55:30,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:30,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651832545] [2020-07-21 12:55:30,098 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 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 [2020-07-21 12:55:30,162 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:30,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:30,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:55:30,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:30,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:30,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651832545] [2020-07-21 12:55:30,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:30,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 12:55:30,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519162426] [2020-07-21 12:55:30,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 12:55:30,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:30,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 12:55:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 12:55:30,209 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-21 12:55:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:30,245 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-21 12:55:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 12:55:30,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-21 12:55:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:30,248 INFO L225 Difference]: With dead ends: 55 [2020-07-21 12:55:30,248 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 12:55:30,249 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 [2020-07-21 12:55:30,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 12:55:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-21 12:55:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 12:55:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 12:55:30,257 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-21 12:55:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:30,258 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 12:55:30,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 12:55:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 12:55:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 12:55:30,260 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:30,260 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] [2020-07-21 12:55:30,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:30,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1076285094, now seen corresponding path program 1 times [2020-07-21 12:55:30,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:30,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610239390] [2020-07-21 12:55:30,478 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 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 [2020-07-21 12:55:30,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:30,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:30,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:30,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:30,600 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:30,600 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:30,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:30,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:30 BoogieIcfgContainer [2020-07-21 12:55:30,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:30,850 INFO L168 Benchmark]: Toolchain (without parser) took 2784.53 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 103.2 MB in the beginning and 192.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:30,850 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:30,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.89 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 102.8 MB in the beginning and 185.7 MB in the end (delta: -82.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:30,852 INFO L168 Benchmark]: Boogie Preprocessor took 64.32 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 183.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:30,853 INFO L168 Benchmark]: RCFGBuilder took 381.60 ms. Allocated memory is still 207.1 MB. Free memory was 183.4 MB in the beginning and 164.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:30,854 INFO L168 Benchmark]: TraceAbstraction took 1833.82 ms. Allocated memory was 207.1 MB in the beginning and 233.3 MB in the end (delta: 26.2 MB). Free memory was 164.2 MB in the beginning and 192.3 MB in the end (delta: -28.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:30,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 498.89 ms. Allocated memory was 139.5 MB in the beginning and 207.1 MB in the end (delta: 67.6 MB). Free memory was 102.8 MB in the beginning and 185.7 MB in the end (delta: -82.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.32 ms. Allocated memory is still 207.1 MB. Free memory was 185.7 MB in the beginning and 183.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.60 ms. Allocated memory is still 207.1 MB. Free memory was 183.4 MB in the beginning and 164.2 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1833.82 ms. Allocated memory was 207.1 MB in the beginning and 233.3 MB in the end (delta: 26.2 MB). Free memory was 164.2 MB in the beginning and 192.3 MB in the end (delta: -28.1 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=2437, msw=-2147483649, x=3] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=2437, msw=-2147483649, x=3] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=2437, 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=2437, 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: 1.7s, 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, 113 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 313 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...