/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 4 -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 [2020-07-20 16:27:47,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:47,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:47,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:47,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:47,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:47,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:47,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:47,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:47,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:47,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:47,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:47,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:47,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:47,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:47,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:47,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:47,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:47,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:47,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:47,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:47,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:47,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:47,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:47,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 16:27:47,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:47,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:47,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:47,687 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 16:27:47,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:47,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:47,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:47,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:47,703 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:47,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:47,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:47,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:47,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:47,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:47,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:47,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:47,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:47,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:47,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:47,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:47,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:47,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:47,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:47,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:47,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:47,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:47,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:47,708 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 -> 4 [2020-07-20 16:27:47,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:47,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:47,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:48,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:48,001 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:48,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 16:27:48,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602f3b488/dea515025c4d4728bd29fcde3e40eeab/FLAG60266b526 [2020-07-20 16:27:48,544 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:48,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 16:27:48,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602f3b488/dea515025c4d4728bd29fcde3e40eeab/FLAG60266b526 [2020-07-20 16:27:48,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/602f3b488/dea515025c4d4728bd29fcde3e40eeab [2020-07-20 16:27:48,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:48,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:48,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:48,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:48,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:48,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:48" (1/1) ... [2020-07-20 16:27:48,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33863ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:48, skipping insertion in model container [2020-07-20 16:27:48,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:48" (1/1) ... [2020-07-20 16:27:48,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:48,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:49,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:49,119 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:49,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:49,271 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:49,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49 WrapperNode [2020-07-20 16:27:49,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:49,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:49,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:49,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:49,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (1/1) ... [2020-07-20 16:27:49,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:49,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:49,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:49,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:49,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (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 16:27:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:49,392 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 16:27:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-20 16:27:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 16:27:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 16:27:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-20 16:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 16:27:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:49,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:49,909 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 16:27:49,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:49 BoogieIcfgContainer [2020-07-20 16:27:49,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:49,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:49,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:49,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:49,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:48" (1/3) ... [2020-07-20 16:27:49,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0fa8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:49, skipping insertion in model container [2020-07-20 16:27:49,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:49" (2/3) ... [2020-07-20 16:27:49,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0fa8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:49, skipping insertion in model container [2020-07-20 16:27:49,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:49" (3/3) ... [2020-07-20 16:27:49,923 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-20 16:27:49,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:49,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:49,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:49,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:49,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:49,981 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:49,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:49,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:49,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:49,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:49,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-20 16:27:50,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 16:27:50,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:50,010 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 16:27:50,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-20 16:27:50,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:50,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673645020] [2020-07-20 16:27:50,025 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 16:27:50,169 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:50,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:50,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:50,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:50,205 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 16:27:50,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:50,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673645020] [2020-07-20 16:27:50,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:50,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:50,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858995484] [2020-07-20 16:27:50,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:50,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:50,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:50,229 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-20 16:27:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:50,263 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-20 16:27:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:50,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 16:27:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:50,279 INFO L225 Difference]: With dead ends: 112 [2020-07-20 16:27:50,280 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 16:27:50,284 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 16:27:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 16:27:50,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 16:27:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 16:27:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-20 16:27:50,331 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-20 16:27:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:50,331 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-20 16:27:50,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-20 16:27:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 16:27:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:50,333 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] [2020-07-20 16:27:50,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:50,547 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-20 16:27:50,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:50,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272587128] [2020-07-20 16:27:50,550 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 16:27:50,666 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:50,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:50,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:50,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:50,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:50,763 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:50,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:51,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:51 BoogieIcfgContainer [2020-07-20 16:27:51,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:51,036 INFO L168 Benchmark]: Toolchain (without parser) took 2171.00 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 97.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,037 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.03 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 180.2 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,039 INFO L168 Benchmark]: Boogie Preprocessor took 55.55 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 177.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,039 INFO L168 Benchmark]: RCFGBuilder took 585.80 ms. Allocated memory is still 203.4 MB. Free memory was 177.5 MB in the beginning and 149.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,040 INFO L168 Benchmark]: TraceAbstraction took 1117.35 ms. Allocated memory is still 203.4 MB. Free memory was 149.0 MB in the beginning and 97.7 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:51,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 406.03 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 180.2 MB in the end (delta: -77.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.55 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 177.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 585.80 ms. Allocated memory is still 203.4 MB. Free memory was 177.5 MB in the beginning and 149.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1117.35 ms. Allocated memory is still 203.4 MB. Free memory was 149.0 MB in the beginning and 97.7 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 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)=5, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={2:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={2:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={2:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={2:0}] [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={2:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={2:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={2:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={2:0}] [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)=4, one_fmod=1, sx=21655, x=3, y=4, Zero_fmod={2:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=2139095040, hy=0, one_fmod=1, sx=21655, x=3, y=4, Zero_fmod={2:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={2:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={2:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={2:0}] - 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, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 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...