/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -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 0.1.25-5644d1e-m [2020-08-18 19:26:59,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:26:59,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:26:59,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:26:59,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:26:59,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:26:59,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:26:59,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:26:59,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:26:59,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:26:59,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:26:59,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:26:59,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:26:59,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:26:59,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:26:59,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:26:59,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:26:59,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:26:59,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:26:59,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:26:59,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:26:59,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:26:59,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:26:59,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:26:59,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:26:59,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:26:59,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:26:59,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:26:59,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:26:59,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:26:59,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:26:59,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:26:59,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:26:59,731 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:26:59,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:26:59,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:26:59,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:26:59,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:26:59,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:26:59,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:26:59,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:26:59,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:26:59,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:26:59,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:26:59,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:26:59,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:26:59,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:26:59,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:26:59,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:26:59,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:26:59,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:26:59,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:26:59,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:26:59,736 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:27:00,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:27:00,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:27:00,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:27:00,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:27:00,074 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:27:00,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 19:27:00,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c33c04664/db1a2f5ff1ce49679a6af621a91b7dbc/FLAG3a086f923 [2020-08-18 19:27:00,639 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:27:00,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 19:27:00,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c33c04664/db1a2f5ff1ce49679a6af621a91b7dbc/FLAG3a086f923 [2020-08-18 19:27:00,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c33c04664/db1a2f5ff1ce49679a6af621a91b7dbc [2020-08-18 19:27:01,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:27:01,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:27:01,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:27:01,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:27:01,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:27:01,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:27:00" (1/1) ... [2020-08-18 19:27:01,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01, skipping insertion in model container [2020-08-18 19:27:01,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:27:00" (1/1) ... [2020-08-18 19:27:01,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:27:01,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:27:01,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:27:01,312 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:27:01,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:27:01,481 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:27:01,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01 WrapperNode [2020-08-18 19:27:01,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:27:01,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:27:01,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:27:01,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:27:01,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... [2020-08-18 19:27:01,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:27:01,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:27:01,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:27:01,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:27:01,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 19:27:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:27:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:27:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 19:27:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 19:27:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 19:27:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:27:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 19:27:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 19:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 19:27:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:27:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:27:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 19:27:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:27:02,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:27:02,234 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 19:27:02,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:27:02 BoogieIcfgContainer [2020-08-18 19:27:02,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:27:02,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:27:02,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:27:02,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:27:02,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:27:00" (1/3) ... [2020-08-18 19:27:02,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650a9a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:27:02, skipping insertion in model container [2020-08-18 19:27:02,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:27:01" (2/3) ... [2020-08-18 19:27:02,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650a9a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:27:02, skipping insertion in model container [2020-08-18 19:27:02,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:27:02" (3/3) ... [2020-08-18 19:27:02,248 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-18 19:27:02,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:27:02,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:27:02,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:27:02,309 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:27:02,309 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:27:02,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:27:02,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:27:02,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:27:02,310 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:27:02,310 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:27:02,310 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:27:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-18 19:27:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:27:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:27:02,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:27:02,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:27:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:27:02,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-18 19:27:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:27:02,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135493405] [2020-08-18 19:27:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:27:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:27:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:27:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:27:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:27:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:27:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:27:02,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135493405] [2020-08-18 19:27:02,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:27:02,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:27:02,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842674134] [2020-08-18 19:27:02,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:27:02,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:27:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:27:02,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:27:02,633 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-18 19:27:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:27:02,988 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-18 19:27:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:27:02,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 19:27:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:27:03,002 INFO L225 Difference]: With dead ends: 142 [2020-08-18 19:27:03,002 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 19:27:03,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:27:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 19:27:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-18 19:27:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 19:27:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-18 19:27:03,058 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-18 19:27:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:27:03,059 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-18 19:27:03,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:27:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-18 19:27:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 19:27:03,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:27:03,061 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] [2020-08-18 19:27:03,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:27:03,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:27:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:27:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-18 19:27:03,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:27:03,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654034609] [2020-08-18 19:27:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:27:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:27:03,157 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:27:03,157 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:27:03,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:27:03,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:27:03 BoogieIcfgContainer [2020-08-18 19:27:03,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:27:03,217 INFO L168 Benchmark]: Toolchain (without parser) took 2208.27 ms. Allocated memory was 146.3 MB in the beginning and 234.4 MB in the end (delta: 88.1 MB). Free memory was 101.9 MB in the beginning and 194.4 MB in the end (delta: -92.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:27:03,218 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 19:27:03,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.89 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 177.1 MB in the end (delta: -75.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:27:03,222 INFO L168 Benchmark]: Boogie Preprocessor took 72.00 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 174.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:27:03,223 INFO L168 Benchmark]: RCFGBuilder took 683.74 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.1 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:27:03,226 INFO L168 Benchmark]: TraceAbstraction took 967.27 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 137.1 MB in the beginning and 194.4 MB in the end (delta: -57.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:27:03,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 476.89 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 177.1 MB in the end (delta: -75.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.00 ms. Allocated memory is still 201.9 MB. Free memory was 177.1 MB in the beginning and 174.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.74 ms. Allocated memory is still 201.9 MB. Free memory was 174.1 MB in the beginning and 137.1 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 967.27 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 137.1 MB in the beginning and 194.4 MB in the end (delta: -57.2 MB). There was no memory consumed. 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, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [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 [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...