/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:55:25,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:25,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:25,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:25,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:25,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:25,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:25,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:25,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:25,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:25,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:25,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:25,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:25,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:25,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:25,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:25,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:25,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:25,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:26,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:26,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:26,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:26,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:26,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:26,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:26,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:26,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:26,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:26,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:55:26,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:26,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:26,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:26,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:26,041 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:26,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:26,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:26,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:26,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:26,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:26,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:26,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:26,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:26,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:26,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:26,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:26,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:26,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:26,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:26,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:26,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:26,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:26,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:26,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:26,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:55:26,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:26,347 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:26,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:26,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:26,353 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:26,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 12:55:26,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48986bf/5b10711d7eb74500b4085d634242adcf/FLAG90150b9e7 [2020-07-21 12:55:26,948 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:26,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 12:55:26,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48986bf/5b10711d7eb74500b4085d634242adcf/FLAG90150b9e7 [2020-07-21 12:55:27,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb48986bf/5b10711d7eb74500b4085d634242adcf [2020-07-21 12:55:27,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:27,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:27,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:27,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:27,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:27,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7c52d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27, skipping insertion in model container [2020-07-21 12:55:27,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:27,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:27,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:27,734 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:27,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:27,832 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:27,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27 WrapperNode [2020-07-21 12:55:27,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:27,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:27,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:27,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:27,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:27,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:27,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:27,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:27,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 12:55:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 12:55:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 12:55:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 12:55:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 12:55:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 12:55:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 12:55:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 12:55:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:28,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:28,606 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 12:55:28,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:28 BoogieIcfgContainer [2020-07-21 12:55:28,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:28,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:28,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:28,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:28,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:27" (1/3) ... [2020-07-21 12:55:28,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baec5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:28, skipping insertion in model container [2020-07-21 12:55:28,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (2/3) ... [2020-07-21 12:55:28,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baec5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:28, skipping insertion in model container [2020-07-21 12:55:28,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:28" (3/3) ... [2020-07-21 12:55:28,619 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-21 12:55:28,630 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:28,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:28,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:28,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:28,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:28,675 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:28,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:28,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:28,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:28,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:28,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 12:55:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 12:55:28,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:28,704 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 12:55:28,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-21 12:55:28,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:28,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361195285] [2020-07-21 12:55:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:28,849 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:28,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:28,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:28,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:28,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:28,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361195285] [2020-07-21 12:55:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:28,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637169927] [2020-07-21 12:55:28,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:28,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:28,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:28,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:28,914 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 12:55:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:28,957 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 12:55:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:28,960 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 12:55:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:28,974 INFO L225 Difference]: With dead ends: 138 [2020-07-21 12:55:28,975 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 12:55:28,980 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 12:55:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 12:55:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 12:55:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 12:55:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 12:55:29,063 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 12:55:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:29,063 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 12:55:29,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 12:55:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 12:55:29,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:29,067 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 12:55:29,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:29,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:29,274 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-21 12:55:29,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:29,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845365700] [2020-07-21 12:55:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,411 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:29,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:29,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:29,472 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:29,505 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:29,506 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:29,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:29 BoogieIcfgContainer [2020-07-21 12:55:29,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:29,760 INFO L168 Benchmark]: Toolchain (without parser) took 2407.30 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 102.1 MB in the beginning and 197.0 MB in the end (delta: -94.9 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,761 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.36 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 177.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,763 INFO L168 Benchmark]: Boogie Preprocessor took 78.07 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 175.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,764 INFO L168 Benchmark]: RCFGBuilder took 699.26 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 138.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,764 INFO L168 Benchmark]: TraceAbstraction took 1144.34 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 197.0 MB in the end (delta: -58.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:29,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 479.36 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 177.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.07 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 175.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.26 ms. Allocated memory is still 202.9 MB. Free memory was 175.3 MB in the beginning and 138.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1144.34 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 197.0 MB in the end (delta: -58.7 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)=9, \old(Zero_fmod)=7, 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=-1, hx=0, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-1, 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=18, ly=21, one_fmod=1, sx=20976, 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=18, ly=21, one_fmod=1, sx=20976, 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: 1.0s, 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...