/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:23,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:23,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:23,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:23,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:23,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:23,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:23,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:23,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:23,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:23,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:23,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:23,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:23,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:23,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:23,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:23,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:23,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:23,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:23,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:23,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:23,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:23,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:23,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:23,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:23,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:23,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:23,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:23,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:07:23,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:23,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:23,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:23,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:23,617 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:23,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:23,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:23,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:23,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:23,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:23,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:23,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:23,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:23,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:23,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:23,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:23,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:23,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:23,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:23,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:23,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:23,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:23,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:23,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:23,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:23,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:23,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:23,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:23,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:23,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:07:23,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:23,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:23,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:23,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:23,926 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:23,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-07-20 21:07:23,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959628d5/ad553e70331347d5bdae8b1d89d5cce5/FLAGf7b7184b9 [2020-07-20 21:07:24,413 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:24,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-07-20 21:07:24,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959628d5/ad553e70331347d5bdae8b1d89d5cce5/FLAGf7b7184b9 [2020-07-20 21:07:24,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f959628d5/ad553e70331347d5bdae8b1d89d5cce5 [2020-07-20 21:07:24,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:24,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:24,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:24,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:24,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:24,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:24" (1/1) ... [2020-07-20 21:07:24,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3153c61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:24, skipping insertion in model container [2020-07-20 21:07:24,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:24" (1/1) ... [2020-07-20 21:07:24,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:24,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:25,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:25,043 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:25,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:25,179 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:25,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25 WrapperNode [2020-07-20 21:07:25,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:25,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:25,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:25,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:25,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... [2020-07-20 21:07:25,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:25,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:25,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:25,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:25,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-07-20 21:07:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-20 21:07:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-20 21:07:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:25,615 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:25,615 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 21:07:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:25 BoogieIcfgContainer [2020-07-20 21:07:25,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:25,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:25,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:25,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:25,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:24" (1/3) ... [2020-07-20 21:07:25,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2f901d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:25, skipping insertion in model container [2020-07-20 21:07:25,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:25" (2/3) ... [2020-07-20 21:07:25,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2f901d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:25, skipping insertion in model container [2020-07-20 21:07:25,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:25" (3/3) ... [2020-07-20 21:07:25,630 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-07-20 21:07:25,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:25,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:25,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:25,695 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:25,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:25,695 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:25,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:25,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:25,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:25,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:25,696 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 21:07:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:07:25,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:25,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:25,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:25,742 INFO L82 PathProgramCache]: Analyzing trace with hash -288864886, now seen corresponding path program 1 times [2020-07-20 21:07:25,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:25,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753794497] [2020-07-20 21:07:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:25,921 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:07:25,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:07:25,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:25,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753794497] [2020-07-20 21:07:25,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:25,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:25,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970776258] [2020-07-20 21:07:25,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:25,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:25,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:25,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:25,981 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-20 21:07:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:26,006 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2020-07-20 21:07:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:26,008 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 21:07:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:26,016 INFO L225 Difference]: With dead ends: 76 [2020-07-20 21:07:26,017 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 21:07:26,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 21:07:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 21:07:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 21:07:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-07-20 21:07:26,062 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2020-07-20 21:07:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:26,063 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-07-20 21:07:26,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-07-20 21:07:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 21:07:26,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:26,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:26,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:26,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1876368369, now seen corresponding path program 1 times [2020-07-20 21:07:26,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:26,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880977959] [2020-07-20 21:07:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:26,377 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:26,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:26,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:26,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:26,429 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:26,430 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:26,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:26,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:26 BoogieIcfgContainer [2020-07-20 21:07:26,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:26,678 INFO L168 Benchmark]: Toolchain (without parser) took 1856.98 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.5 MB in the beginning and 111.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,679 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.10 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 181.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,681 INFO L168 Benchmark]: Boogie Preprocessor took 46.97 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,682 INFO L168 Benchmark]: RCFGBuilder took 392.62 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 157.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,682 INFO L168 Benchmark]: TraceAbstraction took 1053.40 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 111.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:26,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 140.0 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.10 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 181.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.97 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.62 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 157.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1053.40 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 111.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=0] [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; VAL [\old(x)=0, x=0] [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L24] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; VAL [\old(x)=0, \result=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L87] RET, EXPR round_double(x) VAL [round_double(x)=0, x=0] [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=0] [L65] __int32_t hx, lx; VAL [\old(x)=0, x=0] [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=0, \result=0, hx=2146435072, lx=2147483647, x=0] [L90] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=0, x=0] [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...