/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:14:59,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:59,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:59,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:59,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:59,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:59,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:59,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:59,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:59,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:59,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:59,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:59,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:59,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:59,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:59,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:59,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:59,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:59,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:59,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:59,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:59,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:59,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:59,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:59,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:14:59,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:59,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:59,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:59,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 19:15:00,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:15:00,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:15:00,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:15:00,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:15:00,010 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:15:00,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:15:00,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:15:00,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:15:00,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:15:00,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:15:00,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:15:00,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:15:00,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:15:00,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:15:00,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:15:00,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:15:00,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:15:00,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:15:00,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:15:00,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:15:00,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:15:00,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:15:00,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:15:00,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:15:00,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:15:00,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:15:00,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:00,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:15:00,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:15:00,018 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:15:00,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:15:00,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:15:00,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:15:00,331 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:15:00,333 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:15:00,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 19:15:00,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbd59375/1194f71f133f4546b7b9c6bd592da1df/FLAG0a4ddc5be [2020-07-21 19:15:00,877 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:15:00,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 19:15:00,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbd59375/1194f71f133f4546b7b9c6bd592da1df/FLAG0a4ddc5be [2020-07-21 19:15:01,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dbd59375/1194f71f133f4546b7b9c6bd592da1df [2020-07-21 19:15:01,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:15:01,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:15:01,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:01,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:15:01,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:15:01,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f7224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01, skipping insertion in model container [2020-07-21 19:15:01,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:15:01,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:15:01,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:01,504 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:15:01,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:01,677 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:15:01,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01 WrapperNode [2020-07-21 19:15:01,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:01,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:15:01,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:15:01,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:15:01,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... [2020-07-21 19:15:01,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:15:01,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:15:01,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:15:01,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:15:01,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:15:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:15:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:15:01,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 19:15:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 19:15:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 19:15:01,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:15:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:15:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 19:15:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 19:15:01,805 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 19:15:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:15:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:15:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:15:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:15:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 19:15:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:15:02,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:15:02,371 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 19:15:02,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:02 BoogieIcfgContainer [2020-07-21 19:15:02,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:15:02,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:15:02,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:15:02,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:15:02,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:15:01" (1/3) ... [2020-07-21 19:15:02,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba1c7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:02, skipping insertion in model container [2020-07-21 19:15:02,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:01" (2/3) ... [2020-07-21 19:15:02,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba1c7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:02, skipping insertion in model container [2020-07-21 19:15:02,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:02" (3/3) ... [2020-07-21 19:15:02,388 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-21 19:15:02,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:15:02,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:15:02,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:15:02,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:15:02,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:15:02,461 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:15:02,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:15:02,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:15:02,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:15:02,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:15:02,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:15:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 19:15:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 19:15:02,491 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:02,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:15:02,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:02,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-21 19:15:02,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:02,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416419485] [2020-07-21 19:15:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:02,630 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:02,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:02,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:15:02,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:15:02,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:02,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416419485] [2020-07-21 19:15:02,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:02,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:15:02,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633618931] [2020-07-21 19:15:02,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:15:02,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:02,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:15:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:15:02,695 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 19:15:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:02,730 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 19:15:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:15:02,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 19:15:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:02,742 INFO L225 Difference]: With dead ends: 138 [2020-07-21 19:15:02,742 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 19:15:02,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:15:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 19:15:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 19:15:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 19:15:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 19:15:02,812 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 19:15:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:02,813 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 19:15:02,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:15:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 19:15:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 19:15:02,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:02,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:15:03,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:03,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-21 19:15:03,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:03,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389041095] [2020-07-21 19:15:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:03,138 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:03,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:15:03,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:15:03,205 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:03,241 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:15:03,242 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:15:03,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:03,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:15:03 BoogieIcfgContainer [2020-07-21 19:15:03,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:15:03,507 INFO L168 Benchmark]: Toolchain (without parser) took 2310.13 ms. Allocated memory was 145.8 MB in the beginning and 236.5 MB in the end (delta: 90.7 MB). Free memory was 101.4 MB in the beginning and 197.8 MB in the end (delta: -96.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 19:15:03,507 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 19:15:03,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.90 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 178.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:03,509 INFO L168 Benchmark]: Boogie Preprocessor took 64.06 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 175.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:03,510 INFO L168 Benchmark]: RCFGBuilder took 633.99 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 139.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:03,511 INFO L168 Benchmark]: TraceAbstraction took 1123.96 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.7 MB in the beginning and 197.8 MB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 19:15:03,515 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 480.90 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 178.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.06 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 175.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 633.99 ms. Allocated memory is still 202.9 MB. Free memory was 175.1 MB in the beginning and 139.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1123.96 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 138.7 MB in the beginning and 197.8 MB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, 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)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={4:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=0, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={4:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [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)=3, \old(y)=5, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=5, Zero_fmod={4:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=5, Zero_fmod={4:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=7, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={4:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 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...