/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 NOT_INCREMENTALLY -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 10:45:05,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:05,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:05,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:05,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:05,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:05,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:05,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:05,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:05,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:05,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:05,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:05,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:05,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:05,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:05,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:05,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:05,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:05,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:05,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:05,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:05,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:05,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:05,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:05,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:05,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:05,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:05,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:05,821 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 10:45:05,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:05,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:05,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:05,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:05,857 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:05,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:05,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:05,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:05,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:05,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:05,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:05,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:05,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:05,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:05,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:05,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:05,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:05,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:05,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:05,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:05,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:05,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:05,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:05,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:05,869 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 -> NOT_INCREMENTALLY [2020-07-20 10:45:06,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:06,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:06,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:06,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:06,187 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:06,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 10:45:06,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a00c204/19f8bec0e29c41e5a22eff38dcce9bcd/FLAG3d60c5b68 [2020-07-20 10:45:06,734 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:06,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 10:45:06,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a00c204/19f8bec0e29c41e5a22eff38dcce9bcd/FLAG3d60c5b68 [2020-07-20 10:45:07,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64a00c204/19f8bec0e29c41e5a22eff38dcce9bcd [2020-07-20 10:45:07,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:07,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:07,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:07,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:07,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:07,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dbcfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07, skipping insertion in model container [2020-07-20 10:45:07,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:07,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:07,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:07,477 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:07,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:07,643 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:07,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07 WrapperNode [2020-07-20 10:45:07,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:07,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:07,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:07,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:07,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (1/1) ... [2020-07-20 10:45:07,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:07,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:07,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:07,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:07,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (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 10:45:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 10:45:07,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 10:45:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:07,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 10:45:07,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 10:45:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:08,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:08,373 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 10:45:08,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:08 BoogieIcfgContainer [2020-07-20 10:45:08,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:08,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:08,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:08,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:08,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:07" (1/3) ... [2020-07-20 10:45:08,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cba8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:08, skipping insertion in model container [2020-07-20 10:45:08,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:07" (2/3) ... [2020-07-20 10:45:08,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75cba8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:08, skipping insertion in model container [2020-07-20 10:45:08,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:08" (3/3) ... [2020-07-20 10:45:08,391 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-20 10:45:08,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:08,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:08,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:08,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:08,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:08,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:08,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:08,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:08,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:08,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:08,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 10:45:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 10:45:08,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:08,484 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 10:45:08,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:08,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-20 10:45:08,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:08,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501931784] [2020-07-20 10:45:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:45:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:08,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:08,632 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 10:45:08,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:08,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501931784] [2020-07-20 10:45:08,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:08,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:08,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625088102] [2020-07-20 10:45:08,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:08,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:08,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:08,661 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-20 10:45:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:08,696 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-20 10:45:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:08,697 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 10:45:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:08,709 INFO L225 Difference]: With dead ends: 139 [2020-07-20 10:45:08,710 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 10:45:08,714 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 10:45:08,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 10:45:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 10:45:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 10:45:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-20 10:45:08,762 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-20 10:45:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:08,762 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-20 10:45:08,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-20 10:45:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 10:45:08,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:08,764 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 10:45:08,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:08,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-20 10:45:08,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:08,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194788710] [2020-07-20 10:45:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:45:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:09,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:09,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:09,114 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:09,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:09,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:09,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:09 BoogieIcfgContainer [2020-07-20 10:45:09,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:09,372 INFO L168 Benchmark]: Toolchain (without parser) took 2293.21 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,373 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.72 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 178.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,391 INFO L168 Benchmark]: Boogie Preprocessor took 80.97 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,392 INFO L168 Benchmark]: RCFGBuilder took 652.82 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,393 INFO L168 Benchmark]: TraceAbstraction took 989.76 ms. Allocated memory is still 202.9 MB. Free memory was 138.7 MB in the beginning and 90.9 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:09,397 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 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 562.72 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 178.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.97 ms. Allocated memory is still 202.9 MB. Free memory was 178.0 MB in the beginning and 175.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.82 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 989.76 ms. Allocated memory is still 202.9 MB. Free memory was 138.7 MB in the beginning and 90.9 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 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=13, ly=17, one_fmod=1, sx=11797, 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=13, ly=17, one_fmod=1, sx=11797, 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: 0.8s, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 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...