/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:30:51,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:51,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:51,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:30:51,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:30:51,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:30:51,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:30:51,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:30:51,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:30:51,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:30:51,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:30:51,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:30:51,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:51,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:51,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:51,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:51,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:51,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:51,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:51,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:51,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:51,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:51,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:51,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:51,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:51,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:51,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:51,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:51,412 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 00:30:51,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:51,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:51,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:51,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:51,433 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:51,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:51,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:51,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:51,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:51,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:51,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:51,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:51,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:51,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:51,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:51,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:51,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:51,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:51,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:51,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:51,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:51,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:51,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:51,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:51,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:51,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:51,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:51,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:51,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:51,438 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 -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 00:30:51,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:51,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:51,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:51,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:51,749 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:51,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 00:30:51,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff449538/f9fb39d6208c44b0972fdb80c385b84f/FLAGdcef9b9bc [2020-07-21 00:30:52,297 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:52,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 00:30:52,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff449538/f9fb39d6208c44b0972fdb80c385b84f/FLAGdcef9b9bc [2020-07-21 00:30:52,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff449538/f9fb39d6208c44b0972fdb80c385b84f [2020-07-21 00:30:52,718 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:52,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:52,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:52,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:52,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:52,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211b63cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52, skipping insertion in model container [2020-07-21 00:30:52,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:52,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:53,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:53,091 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:53,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:53,173 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:53,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53 WrapperNode [2020-07-21 00:30:53,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:53,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:53,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:53,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:53,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (1/1) ... [2020-07-21 00:30:53,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:53,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:53,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:53,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:53,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (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 00:30:53,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:53,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:53,300 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 00:30:53,300 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 00:30:53,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 00:30:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 00:30:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 00:30:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 00:30:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 00:30:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 00:30:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:53,918 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:53,918 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 00:30:53,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:53 BoogieIcfgContainer [2020-07-21 00:30:53,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:53,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:53,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:53,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:52" (1/3) ... [2020-07-21 00:30:53,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3558ab3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:53, skipping insertion in model container [2020-07-21 00:30:53,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:53" (2/3) ... [2020-07-21 00:30:53,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3558ab3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:53, skipping insertion in model container [2020-07-21 00:30:53,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:53" (3/3) ... [2020-07-21 00:30:53,932 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-21 00:30:53,943 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:53,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:53,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:53,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:53,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:53,994 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:53,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:53,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:53,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:53,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:53,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 00:30:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 00:30:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:54,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:30:54,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-21 00:30:54,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:54,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386150705] [2020-07-21 00:30:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:54,139 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:30:54,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:54,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:54,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:54,172 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 00:30:54,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:54,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386150705] [2020-07-21 00:30:54,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:54,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:54,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17336886] [2020-07-21 00:30:54,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:54,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:54,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:54,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:54,201 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 00:30:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:54,237 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-21 00:30:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:54,239 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 00:30:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:54,251 INFO L225 Difference]: With dead ends: 139 [2020-07-21 00:30:54,251 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 00:30:54,256 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 [2020-07-21 00:30:54,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 00:30:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 00:30:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 00:30:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-21 00:30:54,303 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-21 00:30:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:54,304 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-21 00:30:54,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-21 00:30:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 00:30:54,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:54,306 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] [2020-07-21 00:30:54,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:54,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:54,519 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-21 00:30:54,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:54,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493248213] [2020-07-21 00:30:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:54,612 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:54,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:54,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:54,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:54,688 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:54,689 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:54,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:54,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:54 BoogieIcfgContainer [2020-07-21 00:30:54,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:54,943 INFO L168 Benchmark]: Toolchain (without parser) took 2223.25 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 102.6 MB in the beginning and 200.5 MB in the end (delta: -97.9 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:54,944 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 00:30:54,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.68 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 176.3 MB in the end (delta: -73.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:54,946 INFO L168 Benchmark]: Boogie Preprocessor took 70.68 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 173.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:54,946 INFO L168 Benchmark]: RCFGBuilder took 677.42 ms. Allocated memory is still 202.4 MB. Free memory was 173.4 MB in the beginning and 137.5 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:54,947 INFO L168 Benchmark]: TraceAbstraction took 1015.96 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 136.5 MB in the beginning and 200.5 MB in the end (delta: -64.0 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:54,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 452.68 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 176.3 MB in the end (delta: -73.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.68 ms. Allocated memory is still 202.4 MB. Free memory was 176.3 MB in the beginning and 173.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.42 ms. Allocated memory is still 202.4 MB. Free memory was 173.4 MB in the beginning and 137.5 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1015.96 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 136.5 MB in the beginning and 200.5 MB in the end (delta: -64.0 MB). Peak memory consumption was 55.7 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)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={4:0}] [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={4:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, 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)=0, \old(y)=3, one_fmod=1, x=0, y=3, 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)=0, \old(y)=3, lx=13, ly=18, one_fmod=1, sx=28100, x=0, y=3, 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)=0, \old(y)=3, hx=0, lx=13, ly=18, one_fmod=1, sx=28100, x=0, y=3, Zero_fmod={4:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=6, one_fmod=1, x=0, y=3, Zero_fmod={4:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=6, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={4:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=6, x=0, y=3, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 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...