/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_FUNCTIONS --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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:55:43,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:43,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:43,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:43,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:43,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:43,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:43,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:43,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:43,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:43,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:43,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:43,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:43,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:43,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:43,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:43,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:43,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:43,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:43,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:43,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:43,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:43,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:43,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:43,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:43,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:43,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:43,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:43,537 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 12:55:43,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:43,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:43,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:43,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:43,579 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:43,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:43,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:43,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:43,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:43,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:43,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:43,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:43,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:43,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:43,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:43,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:43,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:43,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:43,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:43,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:43,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:43,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:43,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:43,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:43,585 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_FUNCTIONS 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 12:55:43,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:43,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:43,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:43,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:43,917 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:43,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 12:55:43,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c748721/e38af31d4e264e99b1a12c5709241185/FLAG150ad6814 [2020-07-21 12:55:44,501 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:44,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 12:55:44,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c748721/e38af31d4e264e99b1a12c5709241185/FLAG150ad6814 [2020-07-21 12:55:44,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c748721/e38af31d4e264e99b1a12c5709241185 [2020-07-21 12:55:44,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:44,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:44,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:44,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:44,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:44,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:44" (1/1) ... [2020-07-21 12:55:44,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5a3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:44, skipping insertion in model container [2020-07-21 12:55:44,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:44" (1/1) ... [2020-07-21 12:55:44,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:44,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:45,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:45,131 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:45,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:45,293 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:45,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45 WrapperNode [2020-07-21 12:55:45,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:45,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:45,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:45,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:45,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (1/1) ... [2020-07-21 12:55:45,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:45,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:45,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:45,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:45,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (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 12:55:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-21 12:55:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-21 12:55:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-21 12:55:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 12:55:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:45,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:45,931 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-21 12:55:45,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:45 BoogieIcfgContainer [2020-07-21 12:55:45,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:45,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:45,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:45,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:45,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:44" (1/3) ... [2020-07-21 12:55:45,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d42a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:45, skipping insertion in model container [2020-07-21 12:55:45,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:45" (2/3) ... [2020-07-21 12:55:45,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d42a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:45, skipping insertion in model container [2020-07-21 12:55:45,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:45" (3/3) ... [2020-07-21 12:55:45,946 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-21 12:55:45,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:45,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:45,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:46,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:46,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:46,003 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:46,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:46,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:46,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:46,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:46,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-21 12:55:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 12:55:46,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:46,032 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 12:55:46,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-21 12:55:46,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:46,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328913929] [2020-07-21 12:55:46,046 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 12:55:46,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:46,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:46,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:46,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:46,225 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 12:55:46,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:46,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328913929] [2020-07-21 12:55:46,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:46,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:46,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020737602] [2020-07-21 12:55:46,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:46,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:46,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:46,254 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-21 12:55:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:46,289 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-21 12:55:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:46,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 12:55:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:46,303 INFO L225 Difference]: With dead ends: 112 [2020-07-21 12:55:46,303 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 12:55:46,308 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 12:55:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 12:55:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 12:55:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 12:55:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-21 12:55:46,359 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-21 12:55:46,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:46,360 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-21 12:55:46,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-21 12:55:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 12:55:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:46,362 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 12:55:46,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:46,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-21 12:55:46,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:46,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48334488] [2020-07-21 12:55:46,581 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 12:55:46,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:46,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:46,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:46,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:46,817 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:46,818 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:47,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:47,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:47 BoogieIcfgContainer [2020-07-21 12:55:47,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:47,087 INFO L168 Benchmark]: Toolchain (without parser) took 2260.76 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.8 MB in the beginning and 98.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,088 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.12 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.3 MB in the beginning and 180.1 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,091 INFO L168 Benchmark]: Boogie Preprocessor took 62.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 178.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,092 INFO L168 Benchmark]: RCFGBuilder took 579.08 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 149.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,092 INFO L168 Benchmark]: TraceAbstraction took 1147.22 ms. Allocated memory is still 203.4 MB. Free memory was 149.2 MB in the beginning and 98.1 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:47,096 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 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.12 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.3 MB in the beginning and 180.1 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 178.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 579.08 ms. Allocated memory is still 203.4 MB. Free memory was 178.0 MB in the beginning and 149.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1147.22 ms. Allocated memory is still 203.4 MB. Free memory was 149.2 MB in the beginning and 98.1 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=6, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={5:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={5:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={5:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={5:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=3, \result=1, ix=0, one_fmod=1, x=3, Zero_fmod={5:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={5:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={5:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={5:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, one_fmod=1, sx=4294967295, x=3, y=5, Zero_fmod={5:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, hy=2139095041, one_fmod=1, sx=4294967295, x=3, y=5, Zero_fmod={5:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={5:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={5:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 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=60occurred 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, 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...