/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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:44:46,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:44:46,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:44:46,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:44:46,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:44:46,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:44:46,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:44:46,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:44:46,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:44:46,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:44:46,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:44:46,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:44:46,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:44:46,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:44:46,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:44:46,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:44:46,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:44:46,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:44:46,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:44:46,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:44:46,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:44:46,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:44:46,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:44:46,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:44:46,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:44:46,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:44:46,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:44:46,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:44:46,788 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 15:44:46,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:44:46,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:44:46,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:44:46,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:44:46,810 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:44:46,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:44:46,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:44:46,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:44:46,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:44:46,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:44:46,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:44:46,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:44:46,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:44:46,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:44:46,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:44:46,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:44:46,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:44:46,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:44:46,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:44:46,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:44:46,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:44:46,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:46,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:44:46,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:44:46,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:44:46,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:44:46,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:46,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:44:46,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:44:46,815 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 15:44:47,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:44:47,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:44:47,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:44:47,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:44:47,126 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:44:47,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 15:44:47,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f010ec9/9768fc57533a4dddbbcc21103544f3b9/FLAGc6cced72e [2020-07-21 15:44:47,671 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:44:47,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 15:44:47,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f010ec9/9768fc57533a4dddbbcc21103544f3b9/FLAGc6cced72e [2020-07-21 15:44:48,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17f010ec9/9768fc57533a4dddbbcc21103544f3b9 [2020-07-21 15:44:48,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:44:48,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:44:48,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:48,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:44:48,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:44:48,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc3a0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48, skipping insertion in model container [2020-07-21 15:44:48,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:44:48,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:44:48,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:48,353 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:44:48,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:48,530 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:44:48,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48 WrapperNode [2020-07-21 15:44:48,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:48,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:44:48,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:44:48,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:44:48,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (1/1) ... [2020-07-21 15:44:48,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:44:48,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:44:48,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:44:48,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:44:48,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (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 15:44:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:44:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:44:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-21 15:44:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-21 15:44:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 15:44:48,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:44:48,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 15:44:48,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:44:49,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:44:49,134 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-21 15:44:49,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:49 BoogieIcfgContainer [2020-07-21 15:44:49,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:44:49,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:44:49,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:44:49,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:44:49,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:44:48" (1/3) ... [2020-07-21 15:44:49,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b95936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:49, skipping insertion in model container [2020-07-21 15:44:49,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:48" (2/3) ... [2020-07-21 15:44:49,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b95936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:49, skipping insertion in model container [2020-07-21 15:44:49,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:49" (3/3) ... [2020-07-21 15:44:49,148 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-21 15:44:49,159 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:44:49,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:44:49,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:44:49,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:44:49,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:44:49,208 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:44:49,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:44:49,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:44:49,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:44:49,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:44:49,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:44:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-21 15:44:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 15:44:49,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:49,240 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 15:44:49,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-21 15:44:49,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:49,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256053958] [2020-07-21 15:44:49,258 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 15:44:49,388 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:49,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:44:49,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:44:49,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:44:49,427 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 15:44:49,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:44:49,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256053958] [2020-07-21 15:44:49,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:44:49,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:44:49,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171654563] [2020-07-21 15:44:49,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:44:49,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:44:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:44:49,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:49,457 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-21 15:44:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:44:49,491 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-21 15:44:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:44:49,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 15:44:49,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:44:49,505 INFO L225 Difference]: With dead ends: 112 [2020-07-21 15:44:49,505 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 15:44:49,509 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 15:44:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 15:44:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 15:44:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 15:44:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-21 15:44:49,558 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-21 15:44:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:44:49,558 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-21 15:44:49,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:44:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-21 15:44:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 15:44:49,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:49,560 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 15:44:49,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:49,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-21 15:44:49,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:49,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247310309] [2020-07-21 15:44:49,779 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 15:44:49,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:49,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:44:49,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:44:49,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:49,999 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:44:50,000 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:44:50,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:50,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:44:50 BoogieIcfgContainer [2020-07-21 15:44:50,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:44:50,259 INFO L168 Benchmark]: Toolchain (without parser) took 2229.67 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.8 MB in the beginning and 97.9 MB in the end (delta: 5.9 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,260 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 180.3 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,262 INFO L168 Benchmark]: Boogie Preprocessor took 58.29 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,263 INFO L168 Benchmark]: RCFGBuilder took 549.10 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 149.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,264 INFO L168 Benchmark]: TraceAbstraction took 1115.63 ms. Allocated memory is still 203.4 MB. Free memory was 148.9 MB in the beginning and 97.9 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:50,268 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 146.3 MB. Free memory was 122.5 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 497.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 180.3 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.29 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 549.10 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 149.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1115.63 ms. Allocated memory is still 203.4 MB. Free memory was 148.9 MB in the beginning and 97.9 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)=7, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={4:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={4:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [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={4:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={4:0}] [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={4:0}] [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={4:0}] [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=5853, x=3, y=5, Zero_fmod={4:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=2139095040, hy=0, one_fmod=1, sx=5853, x=3, y=5, Zero_fmod={4:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] - 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...