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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:54:05,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:54:05,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:54:05,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 12:54:05,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 12:54:05,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 12:54:05,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 12:54:05,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 12:54:05,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 12:54:05,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 12:54:05,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 12:54:05,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 12:54:05,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:54:05,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:54:05,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:54:05,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:54:05,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:54:05,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:54:05,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:54:05,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:54:05,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:54:05,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:54:05,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:54:05,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:54:05,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:54:05,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 12:54:05,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 12:54:05,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 12:54:05,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 12:54:05,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 12:54:05,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 12:54:05,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 12:54:05,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 12:54:05,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:54:05,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:54:05,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:54:05,661 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 [2019-09-07 12:54:05,677 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:54:05,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:54:05,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:54:05,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:54:05,679 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:54:05,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:54:05,679 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:54:05,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:54:05,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:54:05,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:54:05,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:54:05,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:54:05,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:54:05,681 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:54:05,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:54:05,681 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:54:05,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:54:05,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:54:05,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:54:05,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:54:05,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:54:05,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:54:05,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:54:05,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:54:05,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:54:05,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:54:05,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:54:05,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:54:05,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:54:05,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:54:05,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:54:05,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:54:05,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:54:05,748 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:54:05,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3.c.cil.c [2019-09-07 12:54:05,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4357ab60c/3484f1550ed2474e93bda6c37f788c8f/FLAGb0b2d93be [2019-09-07 12:54:06,272 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:54:06,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3.c.cil.c [2019-09-07 12:54:06,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4357ab60c/3484f1550ed2474e93bda6c37f788c8f/FLAGb0b2d93be [2019-09-07 12:54:06,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4357ab60c/3484f1550ed2474e93bda6c37f788c8f [2019-09-07 12:54:06,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:54:06,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:54:06,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:54:06,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:54:06,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:54:06,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:54:06" (1/1) ... [2019-09-07 12:54:06,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d26bdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:06, skipping insertion in model container [2019-09-07 12:54:06,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:54:06" (1/1) ... [2019-09-07 12:54:06,655 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:54:06,680 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:54:06,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:54:06,912 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:54:07,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:54:07,047 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:54:07,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07 WrapperNode [2019-09-07 12:54:07,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:54:07,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:54:07,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:54:07,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:54:07,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... [2019-09-07 12:54:07,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:54:07,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:54:07,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:54:07,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:54:07,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:54:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:54:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:54:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 12:54:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2019-09-07 12:54:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2019-09-07 12:54:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2019-09-07 12:54:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:54:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:54:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-07 12:54:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-07 12:54:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 12:54:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2019-09-07 12:54:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2019-09-07 12:54:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2019-09-07 12:54:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:54:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:54:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:54:07,546 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:54:07,547 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-07 12:54:07,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:54:07 BoogieIcfgContainer [2019-09-07 12:54:07,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:54:07,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:54:07,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:54:07,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:54:07,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:54:06" (1/3) ... [2019-09-07 12:54:07,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e92e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:54:07, skipping insertion in model container [2019-09-07 12:54:07,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:07" (2/3) ... [2019-09-07 12:54:07,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e92e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:54:07, skipping insertion in model container [2019-09-07 12:54:07,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:54:07" (3/3) ... [2019-09-07 12:54:07,555 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3.c.cil.c [2019-09-07 12:54:07,566 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:54:07,573 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:54:07,589 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:54:07,617 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:54:07,618 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:54:07,618 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:54:07,618 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:54:07,618 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:54:07,618 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:54:07,619 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:54:07,619 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:54:07,619 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:54:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-09-07 12:54:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-07 12:54:07,642 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:07,643 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:07,645 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:07,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1312098946, now seen corresponding path program 1 times [2019-09-07 12:54:07,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:07,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:07,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:07,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:07,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 12:54:08,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:54:08,067 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:54:08,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:08,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-07 12:54:08,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:54:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 12:54:08,249 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:54:08,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 12 [2019-09-07 12:54:08,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 12:54:08,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 12:54:08,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-09-07 12:54:08,271 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 12 states. [2019-09-07 12:54:08,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:08,824 INFO L93 Difference]: Finished difference Result 163 states and 254 transitions. [2019-09-07 12:54:08,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 12:54:08,828 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2019-09-07 12:54:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:08,842 INFO L225 Difference]: With dead ends: 163 [2019-09-07 12:54:08,843 INFO L226 Difference]: Without dead ends: 103 [2019-09-07 12:54:08,848 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-09-07 12:54:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-09-07 12:54:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2019-09-07 12:54:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-09-07 12:54:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2019-09-07 12:54:08,920 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 34 [2019-09-07 12:54:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:08,922 INFO L475 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2019-09-07 12:54:08,923 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 12:54:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2019-09-07 12:54:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-07 12:54:08,927 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:08,928 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:08,929 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:08,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1254840644, now seen corresponding path program 1 times [2019-09-07 12:54:08,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:08,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:08,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:08,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:08,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 12:54:09,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:09,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-07 12:54:09,174 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 12:54:09,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 12:54:09,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-07 12:54:09,175 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand 8 states. [2019-09-07 12:54:09,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:09,291 INFO L93 Difference]: Finished difference Result 145 states and 199 transitions. [2019-09-07 12:54:09,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:54:09,291 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2019-09-07 12:54:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:09,295 INFO L225 Difference]: With dead ends: 145 [2019-09-07 12:54:09,295 INFO L226 Difference]: Without dead ends: 104 [2019-09-07 12:54:09,298 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-07 12:54:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-09-07 12:54:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 89. [2019-09-07 12:54:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-09-07 12:54:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2019-09-07 12:54:09,332 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 34 [2019-09-07 12:54:09,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:09,332 INFO L475 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2019-09-07 12:54:09,332 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 12:54:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2019-09-07 12:54:09,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-07 12:54:09,336 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:09,336 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2019-09-07 12:54:09,337 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:09,337 INFO L82 PathProgramCache]: Analyzing trace with hash 894544493, now seen corresponding path program 1 times [2019-09-07 12:54:09,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:09,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:09,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:09,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:09,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 12:54:09,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:54:09,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 12:54:09,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:54:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:09,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-07 12:54:09,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:54:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 12:54:09,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:54:09,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2019-09-07 12:54:09,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 12:54:09,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 12:54:09,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2019-09-07 12:54:09,848 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 17 states. [2019-09-07 12:54:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:10,615 INFO L93 Difference]: Finished difference Result 172 states and 233 transitions. [2019-09-07 12:54:10,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 12:54:10,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2019-09-07 12:54:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:10,618 INFO L225 Difference]: With dead ends: 172 [2019-09-07 12:54:10,619 INFO L226 Difference]: Without dead ends: 131 [2019-09-07 12:54:10,621 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2019-09-07 12:54:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-09-07 12:54:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 90. [2019-09-07 12:54:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-09-07 12:54:10,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2019-09-07 12:54:10,646 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 38 [2019-09-07 12:54:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:10,647 INFO L475 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2019-09-07 12:54:10,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 12:54:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2019-09-07 12:54:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-07 12:54:10,649 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:10,649 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-09-07 12:54:10,649 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:10,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2083243036, now seen corresponding path program 1 times [2019-09-07 12:54:10,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:10,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:10,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:10,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:10,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 12:54:10,831 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:10,831 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-07 12:54:10,831 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 12:54:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 12:54:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-07 12:54:10,832 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand 9 states. [2019-09-07 12:54:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:10,969 INFO L93 Difference]: Finished difference Result 133 states and 172 transitions. [2019-09-07 12:54:10,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 12:54:10,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-09-07 12:54:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:10,972 INFO L225 Difference]: With dead ends: 133 [2019-09-07 12:54:10,972 INFO L226 Difference]: Without dead ends: 110 [2019-09-07 12:54:10,973 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-07 12:54:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-09-07 12:54:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2019-09-07 12:54:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-09-07 12:54:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2019-09-07 12:54:10,986 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 42 [2019-09-07 12:54:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:10,986 INFO L475 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2019-09-07 12:54:10,986 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 12:54:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2019-09-07 12:54:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-07 12:54:10,988 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:10,989 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:10,989 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash 424074718, now seen corresponding path program 1 times [2019-09-07 12:54:10,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:10,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:10,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:10,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:10,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-07 12:54:11,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:11,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-09-07 12:54:11,281 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 12:54:11,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 12:54:11,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-09-07 12:54:11,282 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand 14 states. [2019-09-07 12:54:11,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:11,498 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2019-09-07 12:54:11,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 12:54:11,499 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-09-07 12:54:11,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:11,501 INFO L225 Difference]: With dead ends: 169 [2019-09-07 12:54:11,501 INFO L226 Difference]: Without dead ends: 141 [2019-09-07 12:54:11,502 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2019-09-07 12:54:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-07 12:54:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2019-09-07 12:54:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-09-07 12:54:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2019-09-07 12:54:11,517 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 42 [2019-09-07 12:54:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:11,518 INFO L475 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2019-09-07 12:54:11,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 12:54:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2019-09-07 12:54:11,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-07 12:54:11,520 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:11,520 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2019-09-07 12:54:11,521 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:11,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1947506722, now seen corresponding path program 1 times [2019-09-07 12:54:11,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:11,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:11,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:11,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:11,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 12:54:11,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:54:11,602 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 12:54:11,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:11,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2019-09-07 12:54:11,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:54:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 12:54:11,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:54:11,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-09-07 12:54:11,668 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 12:54:11,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 12:54:11,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-07 12:54:11,670 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand 8 states. [2019-09-07 12:54:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:11,774 INFO L93 Difference]: Finished difference Result 200 states and 264 transitions. [2019-09-07 12:54:11,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 12:54:11,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-09-07 12:54:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:11,781 INFO L225 Difference]: With dead ends: 200 [2019-09-07 12:54:11,781 INFO L226 Difference]: Without dead ends: 172 [2019-09-07 12:54:11,782 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-07 12:54:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-09-07 12:54:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2019-09-07 12:54:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-09-07 12:54:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2019-09-07 12:54:11,816 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 42 [2019-09-07 12:54:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:11,817 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2019-09-07 12:54:11,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 12:54:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2019-09-07 12:54:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-07 12:54:11,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:11,822 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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] [2019-09-07 12:54:11,822 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:11,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2004765024, now seen corresponding path program 1 times [2019-09-07 12:54:11,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:11,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:11,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:11,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:11,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:54:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:54:11,867 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-07 12:54:11,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.09 12:54:11 BoogieIcfgContainer [2019-09-07 12:54:11,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-07 12:54:11,937 INFO L168 Benchmark]: Toolchain (without parser) took 5296.01 ms. Allocated memory was 134.7 MB in the beginning and 255.3 MB in the end (delta: 120.6 MB). Free memory was 90.8 MB in the beginning and 121.8 MB in the end (delta: -31.0 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,938 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.73 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 90.6 MB in the beginning and 175.8 MB in the end (delta: -85.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,942 INFO L168 Benchmark]: Boogie Preprocessor took 42.24 ms. Allocated memory is still 200.3 MB. Free memory was 175.2 MB in the beginning and 173.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,943 INFO L168 Benchmark]: RCFGBuilder took 457.82 ms. Allocated memory is still 200.3 MB. Free memory was 173.3 MB in the beginning and 150.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,945 INFO L168 Benchmark]: TraceAbstraction took 4385.25 ms. Allocated memory was 200.3 MB in the beginning and 255.3 MB in the end (delta: 55.1 MB). Free memory was 150.2 MB in the beginning and 121.8 MB in the end (delta: 28.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:11,953 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 134.7 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.73 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 90.6 MB in the beginning and 175.8 MB in the end (delta: -85.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.24 ms. Allocated memory is still 200.3 MB. Free memory was 175.2 MB in the beginning and 173.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.82 ms. Allocated memory is still 200.3 MB. Free memory was 173.3 MB in the beginning and 150.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4385.25 ms. Allocated memory was 200.3 MB in the beginning and 255.3 MB in the end (delta: 55.1 MB). Free memory was 150.2 MB in the beginning and 121.8 MB in the end (delta: 28.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; VAL [ea=127, eb=0, ma=33554432, mb=16777216] [L231] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L19] COND TRUE ! m [L20] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L70] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L231] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0, ma=33554432, mb=16777216] [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L19] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L25] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L47] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L49] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L70] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L232] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L19] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L25] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L47] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L49] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L66] m = m & ~ (1U << 24U) [L67] res = m | (unsigned int )((e + 128) << 24U) [L68] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=1, e=0, res=1] [L70] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=4294967297, __retres4=1, e=0, res=1] [L233] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=4294967297, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=1] [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L84] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1] [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, eb=128] [L104] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. UNSAFE Result, 4.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 484 SDtfs, 273 SDslu, 3920 SDs, 0 SdLazy, 1043 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 125 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 337 ConstructedInterpolants, 1 QuantifiedInterpolants, 36881 SizeOfPredicates, 13 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 114/148 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...