/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:55,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:55,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:55,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:55,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:55,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:55,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:55,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:55,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:55,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:55,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:55,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:55,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:55,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:55,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:55,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:55,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:55,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:55,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:55,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:55,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:55,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:55,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:55,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:55,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:55,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:55,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:55,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:55,725 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 13:05:55,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:55,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:55,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:55,741 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:55,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:55,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:55,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:55,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:55,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:55,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:55,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:55,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:55,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:55,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:55,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:55,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:55,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:55,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:55,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:55,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:55,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:55,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:55,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:55,746 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 13:05:56,048 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:56,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:56,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:56,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:56,067 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:56,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 13:05:56,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bd5cd85/e598af83dda248c68520b5967b818b2f/FLAG9c3fd7b13 [2020-07-20 13:05:56,626 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:56,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 13:05:56,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bd5cd85/e598af83dda248c68520b5967b818b2f/FLAG9c3fd7b13 [2020-07-20 13:05:57,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0bd5cd85/e598af83dda248c68520b5967b818b2f [2020-07-20 13:05:57,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:57,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:57,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:57,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:57,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:57,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65343b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57, skipping insertion in model container [2020-07-20 13:05:57,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:57,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:57,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:57,447 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:57,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:57,525 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:57,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57 WrapperNode [2020-07-20 13:05:57,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:57,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:57,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:57,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:57,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... [2020-07-20 13:05:57,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:57,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:57,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:57,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:57,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:05:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 13:05:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 13:05:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:05:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:05:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 13:05:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 13:05:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 13:05:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:05:58,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:05:58,290 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 13:05:58,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:58 BoogieIcfgContainer [2020-07-20 13:05:58,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:05:58,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:05:58,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:05:58,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:05:58,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:57" (1/3) ... [2020-07-20 13:05:58,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5b8fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:58, skipping insertion in model container [2020-07-20 13:05:58,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:57" (2/3) ... [2020-07-20 13:05:58,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5b8fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:58, skipping insertion in model container [2020-07-20 13:05:58,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:58" (3/3) ... [2020-07-20 13:05:58,304 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-20 13:05:58,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:05:58,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:05:58,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:05:58,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:05:58,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:05:58,358 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:05:58,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:05:58,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:05:58,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:05:58,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:05:58,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:05:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 13:05:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 13:05:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:58,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:05:58,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:58,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-20 13:05:58,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:58,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534230465] [2020-07-20 13:05:58,405 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 13:05:58,553 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:05:58,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:05:58,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:05:58,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:05:58,597 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 13:05:58,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:05:58,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534230465] [2020-07-20 13:05:58,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:05:58,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:05:58,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236352105] [2020-07-20 13:05:58,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:05:58,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:05:58,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:05:58,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:05:58,624 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-20 13:05:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:05:58,657 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-20 13:05:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:05:58,658 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 13:05:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:05:58,669 INFO L225 Difference]: With dead ends: 139 [2020-07-20 13:05:58,669 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 13:05:58,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 13:05:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 13:05:58,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 13:05:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 13:05:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-20 13:05:58,722 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-20 13:05:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:05:58,722 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-20 13:05:58,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:05:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-20 13:05:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 13:05:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:58,725 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] [2020-07-20 13:05:58,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:58,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-20 13:05:58,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:58,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679071468] [2020-07-20 13:05:58,943 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 13:05:59,040 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:05:59,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:05:59,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:05:59,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:59,102 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:05:59,102 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:05:59,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:59,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:05:59 BoogieIcfgContainer [2020-07-20 13:05:59,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:05:59,355 INFO L168 Benchmark]: Toolchain (without parser) took 2307.20 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 100.3 MB in the beginning and 83.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,356 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.63 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 99.9 MB in the beginning and 173.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,358 INFO L168 Benchmark]: Boogie Preprocessor took 66.91 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 170.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,359 INFO L168 Benchmark]: RCFGBuilder took 701.37 ms. Allocated memory is still 199.2 MB. Free memory was 170.4 MB in the beginning and 134.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,359 INFO L168 Benchmark]: TraceAbstraction took 1055.88 ms. Allocated memory is still 199.2 MB. Free memory was 134.0 MB in the beginning and 83.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:59,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 477.63 ms. Allocated memory was 142.6 MB in the beginning and 199.2 MB in the end (delta: 56.6 MB). Free memory was 99.9 MB in the beginning and 173.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.91 ms. Allocated memory is still 199.2 MB. Free memory was 173.3 MB in the beginning and 170.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 701.37 ms. Allocated memory is still 199.2 MB. Free memory was 170.4 MB in the beginning and 134.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1055.88 ms. Allocated memory is still 199.2 MB. Free memory was 134.0 MB in the beginning and 83.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={2:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={2:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=3, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=3, lx=14, ly=15, one_fmod=1, sx=4294967295, x=0, y=3, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=3, hx=0, lx=14, ly=15, one_fmod=1, sx=4294967295, x=0, y=3, Zero_fmod={2:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=5, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=5, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={2:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=5, x=0, y=3, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 84 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...