/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:44:30,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:44:30,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:44:30,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:44:30,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:44:30,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:44:30,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:44:30,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:44:30,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:44:30,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:44:30,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:44:30,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:44:30,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:44:30,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:44:30,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:44:30,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:44:30,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:44:30,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:44:30,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:44:30,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:44:30,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:44:30,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:44:30,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:44:30,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:44:30,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:44:30,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:44:30,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:44:30,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:44:30,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:44:30,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:44:30,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:44:30,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:44:30,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:44:30,345 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:44:30,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:44:30,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:44:30,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:44:30,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:44:30,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:44:30,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:44:30,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:44:30,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:44:30,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:44:30,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:44:30,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:44:30,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:44:30,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:44:30,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:44:30,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:44:30,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:44:30,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:30,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:44:30,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:44:30,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:44:30,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:44:30,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:30,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:44:30,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:44:30,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:44:30,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:44:30,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:44:30,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:44:30,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:44:30,633 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:44:30,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 15:44:30,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a643a571d/e19607d5617d45d6bd831c2056b11abc/FLAG4ceb7e17b [2020-07-21 15:44:31,205 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:44:31,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 15:44:31,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a643a571d/e19607d5617d45d6bd831c2056b11abc/FLAG4ceb7e17b [2020-07-21 15:44:31,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a643a571d/e19607d5617d45d6bd831c2056b11abc [2020-07-21 15:44:31,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:44:31,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:44:31,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:31,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:44:31,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:44:31,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257532a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31, skipping insertion in model container [2020-07-21 15:44:31,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:44:31,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:44:31,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:31,948 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:44:32,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:32,050 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:44:32,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32 WrapperNode [2020-07-21 15:44:32,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:32,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:44:32,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:44:32,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:44:32,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... [2020-07-21 15:44:32,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:44:32,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:44:32,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:44:32,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:44:32,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:44:32,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:44:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 15:44:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 15:44:32,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:44:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:44:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 15:44:32,198 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 15:44:32,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:44:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 15:44:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:44:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:44:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 15:44:32,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:44:32,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:44:32,799 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 15:44:32,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:32 BoogieIcfgContainer [2020-07-21 15:44:32,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:44:32,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:44:32,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:44:32,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:44:32,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:44:31" (1/3) ... [2020-07-21 15:44:32,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45270de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:32, skipping insertion in model container [2020-07-21 15:44:32,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:32" (2/3) ... [2020-07-21 15:44:32,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45270de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:32, skipping insertion in model container [2020-07-21 15:44:32,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:32" (3/3) ... [2020-07-21 15:44:32,813 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-21 15:44:32,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:44:32,833 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:44:32,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:44:32,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:44:32,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:44:32,872 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:44:32,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:44:32,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:44:32,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:44:32,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:44:32,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:44:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 15:44:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 15:44:32,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:32,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:32,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-21 15:44:32,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:32,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59435113] [2020-07-21 15:44:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:33,045 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:33,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:44:33,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:44:33,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:44:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:44:33,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:44:33,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59435113] [2020-07-21 15:44:33,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:44:33,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:44:33,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124965213] [2020-07-21 15:44:33,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:44:33,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:44:33,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:44:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:33,108 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 15:44:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:44:33,142 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 15:44:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:44:33,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 15:44:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:44:33,156 INFO L225 Difference]: With dead ends: 138 [2020-07-21 15:44:33,156 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 15:44:33,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 15:44:33,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 15:44:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 15:44:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 15:44:33,211 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 15:44:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:44:33,211 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 15:44:33,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:44:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 15:44:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 15:44:33,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:33,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:33,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:33,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-21 15:44:33,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:33,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552544636] [2020-07-21 15:44:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:33,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:33,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:44:33,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:44:33,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:33,625 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:44:33,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:44:33,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:33,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:44:33 BoogieIcfgContainer [2020-07-21 15:44:33,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:44:33,886 INFO L168 Benchmark]: Toolchain (without parser) took 2304.44 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 101.0 MB in the beginning and 198.7 MB in the end (delta: -97.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:44:33,886 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:44:33,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.46 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 177.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,888 INFO L168 Benchmark]: Boogie Preprocessor took 87.82 ms. Allocated memory is still 202.4 MB. Free memory was 177.3 MB in the beginning and 174.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,889 INFO L168 Benchmark]: RCFGBuilder took 664.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.5 MB in the beginning and 138.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,890 INFO L168 Benchmark]: TraceAbstraction took 1077.66 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 198.7 MB in the end (delta: -60.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:44:33,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 468.46 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 177.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.82 ms. Allocated memory is still 202.4 MB. Free memory was 177.3 MB in the beginning and 174.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 664.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.5 MB in the beginning and 138.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1077.66 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 198.7 MB in the end (delta: -60.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={2243:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={2243:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={2243:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=28881, one_fmod=1, x=3, Zero_fmod={2243:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={2243:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={2243:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={2243:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=17, ly=19, one_fmod=1, sx=32278, x=3, y=5, Zero_fmod={2243:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=17, ly=19, one_fmod=1, sx=32278, x=3, y=5, Zero_fmod={2243:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={2243:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={2243:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={2243:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 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: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...