/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:23,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:23,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:23,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:23,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:23,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:23,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:23,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:23,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:23,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:23,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:23,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:23,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:23,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:23,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:23,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:23,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:23,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:23,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:23,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:23,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:23,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:23,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:23,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:23,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 16:27:23,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:23,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:23,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:23,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:27:23,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:23,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:23,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:23,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:23,808 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:23,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:23,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:23,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:23,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:23,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:23,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:23,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:23,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:23,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:23,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:23,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:23,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:23,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:23,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:23,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:23,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:23,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:23,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:23,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:23,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:27:24,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:24,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:24,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:24,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:24,110 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:24,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-20 16:27:24,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03972edc/343dec2a62e54fafb9258a998dff15df/FLAG920201ad0 [2020-07-20 16:27:24,712 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:24,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-20 16:27:24,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03972edc/343dec2a62e54fafb9258a998dff15df/FLAG920201ad0 [2020-07-20 16:27:25,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03972edc/343dec2a62e54fafb9258a998dff15df [2020-07-20 16:27:25,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:25,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:25,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:25,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:25,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:25,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55484ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25, skipping insertion in model container [2020-07-20 16:27:25,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:25,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:25,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:25,337 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:25,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:25,483 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:25,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25 WrapperNode [2020-07-20 16:27:25,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:25,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:25,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:25,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:25,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... [2020-07-20 16:27:25,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:25,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:25,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:25,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:25,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-20 16:27:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 16:27:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-20 16:27:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 16:27:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:25,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:26,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:26,007 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 16:27:26,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:26 BoogieIcfgContainer [2020-07-20 16:27:26,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:26,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:26,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:26,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:26,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:25" (1/3) ... [2020-07-20 16:27:26,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cbd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:26, skipping insertion in model container [2020-07-20 16:27:26,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:25" (2/3) ... [2020-07-20 16:27:26,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cbd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:26, skipping insertion in model container [2020-07-20 16:27:26,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:26" (3/3) ... [2020-07-20 16:27:26,020 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-07-20 16:27:26,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:26,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:26,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:26,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:26,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:26,077 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:26,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:26,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:26,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:26,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:26,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 16:27:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 16:27:26,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:26,103 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] [2020-07-20 16:27:26,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-07-20 16:27:26,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:26,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533424311] [2020-07-20 16:27:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:26,230 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:26,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:26,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:26,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:26,262 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 16:27:26,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:26,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533424311] [2020-07-20 16:27:26,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:26,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:26,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498565274] [2020-07-20 16:27:26,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:26,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:26,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:26,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:26,284 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-20 16:27:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:26,307 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-20 16:27:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:26,308 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-20 16:27:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:26,318 INFO L225 Difference]: With dead ends: 86 [2020-07-20 16:27:26,319 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 16:27:26,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 16:27:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 16:27:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 16:27:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 16:27:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-20 16:27:26,365 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-20 16:27:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:26,366 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-20 16:27:26,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-20 16:27:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 16:27:26,368 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:26,368 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] [2020-07-20 16:27:26,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:26,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-07-20 16:27:26,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:26,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513253334] [2020-07-20 16:27:26,587 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 16:27:26,656 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:26,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:26,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:26,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:26,700 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:26,700 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:26,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:26,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:26 BoogieIcfgContainer [2020-07-20 16:27:26,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:26,954 INFO L168 Benchmark]: Toolchain (without parser) took 1862.97 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 114.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,955 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.33 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 181.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,957 INFO L168 Benchmark]: Boogie Preprocessor took 47.14 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,958 INFO L168 Benchmark]: RCFGBuilder took 479.99 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 157.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,959 INFO L168 Benchmark]: TraceAbstraction took 938.27 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 114.3 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:26,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.33 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 181.5 MB in the end (delta: -78.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.14 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 179.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.99 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 157.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 938.27 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 114.3 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=0, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=0, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=0, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2437, i1=0, j0=0, x=4] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=4, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 71 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...