/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:15:29,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:15:29,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:15:29,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:15:29,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:15:29,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:15:29,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:15:29,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:15:29,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:15:29,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:15:29,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:15:29,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:15:29,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:15:29,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:15:29,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:15:29,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:15:29,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:15:29,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:15:29,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:15:29,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:15:29,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:15:29,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:15:29,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:15:29,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:15:29,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:15:29,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:15:29,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:15:29,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:15:29,439 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 19:15:29,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:15:29,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:15:29,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:15:29,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:15:29,466 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:15:29,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:15:29,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:15:29,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:15:29,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:15:29,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:15:29,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:15:29,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:15:29,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:15:29,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:15:29,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:15:29,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:15:29,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:15:29,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:15:29,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:15:29,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:15:29,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:15:29,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:15:29,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:15:29,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:15:29,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:15:29,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:15:29,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:15:29,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:15:29,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:15:29,793 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:15:29,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-07-21 19:15:29,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b68f40e/526eea3c83c34ba7aa6970902071df23/FLAG8ecc2cbbb [2020-07-21 19:15:30,339 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:15:30,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-07-21 19:15:30,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b68f40e/526eea3c83c34ba7aa6970902071df23/FLAG8ecc2cbbb [2020-07-21 19:15:30,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b68f40e/526eea3c83c34ba7aa6970902071df23 [2020-07-21 19:15:30,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:15:30,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:15:30,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:30,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:15:30,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:15:30,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:30" (1/1) ... [2020-07-21 19:15:30,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dee375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:30, skipping insertion in model container [2020-07-21 19:15:30,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:30" (1/1) ... [2020-07-21 19:15:30,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:15:30,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:15:30,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:30,983 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:15:31,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:31,138 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:15:31,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31 WrapperNode [2020-07-21 19:15:31,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:31,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:15:31,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:15:31,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:15:31,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (1/1) ... [2020-07-21 19:15:31,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:15:31,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:15:31,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:15:31,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:15:31,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (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 19:15:31,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:15:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:15:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 19:15:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-07-21 19:15:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-07-21 19:15:31,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-07-21 19:15:31,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:15:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:15:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 19:15:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-21 19:15:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 19:15:31,256 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-07-21 19:15:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-07-21 19:15:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-07-21 19:15:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:15:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:15:31,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:15:31,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:15:31,721 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 19:15:31,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:31 BoogieIcfgContainer [2020-07-21 19:15:31,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:15:31,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:15:31,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:15:31,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:15:31,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:15:30" (1/3) ... [2020-07-21 19:15:31,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d62743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:31, skipping insertion in model container [2020-07-21 19:15:31,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:31" (2/3) ... [2020-07-21 19:15:31,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d62743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:31, skipping insertion in model container [2020-07-21 19:15:31,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:31" (3/3) ... [2020-07-21 19:15:31,735 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-07-21 19:15:31,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:15:31,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:15:31,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:15:31,792 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:15:31,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:15:31,792 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:15:31,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:15:31,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:15:31,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:15:31,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:15:31,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:15:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-21 19:15:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 19:15:31,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:31,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 19:15:31,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:31,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1312098946, now seen corresponding path program 1 times [2020-07-21 19:15:31,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:31,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914300557] [2020-07-21 19:15:31,833 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 19:15:31,948 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:31,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 19:15:31,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 19:15:32,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:32,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914300557] [2020-07-21 19:15:32,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:32,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 19:15:32,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043171727] [2020-07-21 19:15:32,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 19:15:32,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:32,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 19:15:32,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-21 19:15:32,110 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 8 states. [2020-07-21 19:15:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:32,284 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2020-07-21 19:15:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 19:15:32,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-07-21 19:15:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:32,301 INFO L225 Difference]: With dead ends: 131 [2020-07-21 19:15:32,302 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 19:15:32,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-21 19:15:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 19:15:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-07-21 19:15:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 19:15:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2020-07-21 19:15:32,368 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 34 [2020-07-21 19:15:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:32,369 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2020-07-21 19:15:32,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 19:15:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2020-07-21 19:15:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 19:15:32,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:32,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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 19:15:32,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:32,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash 837286191, now seen corresponding path program 1 times [2020-07-21 19:15:32,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:32,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474824829] [2020-07-21 19:15:32,597 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 19:15:32,751 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:32,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:32,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 19:15:32,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 19:15:32,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:15:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 19:15:33,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474824829] [2020-07-21 19:15:33,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:15:33,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-07-21 19:15:33,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981411274] [2020-07-21 19:15:33,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 19:15:33,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:33,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 19:15:33,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-07-21 19:15:33,097 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 16 states. [2020-07-21 19:15:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:33,318 INFO L93 Difference]: Finished difference Result 124 states and 164 transitions. [2020-07-21 19:15:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 19:15:33,320 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-21 19:15:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:33,324 INFO L225 Difference]: With dead ends: 124 [2020-07-21 19:15:33,324 INFO L226 Difference]: Without dead ends: 96 [2020-07-21 19:15:33,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-07-21 19:15:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-21 19:15:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-07-21 19:15:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-21 19:15:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-07-21 19:15:33,343 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 38 [2020-07-21 19:15:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:33,344 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-07-21 19:15:33,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 19:15:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-07-21 19:15:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 19:15:33,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:33,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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 19:15:33,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:33,557 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2083243036, now seen corresponding path program 1 times [2020-07-21 19:15:33,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:33,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099427534] [2020-07-21 19:15:33,559 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:33,629 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:15:33,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 19:15:33,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 19:15:33,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:15:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 19:15:33,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099427534] [2020-07-21 19:15:33,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:15:33,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-21 19:15:33,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810731512] [2020-07-21 19:15:33,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 19:15:33,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:33,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 19:15:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-21 19:15:33,842 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 9 states. [2020-07-21 19:15:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:34,136 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2020-07-21 19:15:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 19:15:34,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-07-21 19:15:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:34,143 INFO L225 Difference]: With dead ends: 137 [2020-07-21 19:15:34,144 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 19:15:34,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-07-21 19:15:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 19:15:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 90. [2020-07-21 19:15:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-21 19:15:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2020-07-21 19:15:34,169 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 42 [2020-07-21 19:15:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:34,170 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2020-07-21 19:15:34,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 19:15:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2020-07-21 19:15:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 19:15:34,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:34,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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 19:15:34,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:34,386 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:34,387 INFO L82 PathProgramCache]: Analyzing trace with hash 424074718, now seen corresponding path program 2 times [2020-07-21 19:15:34,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:34,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762752850] [2020-07-21 19:15:34,389 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:34,453 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:34,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:34,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 19:15:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 19:15:34,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:34,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762752850] [2020-07-21 19:15:34,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:34,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 19:15:34,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671075950] [2020-07-21 19:15:34,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 19:15:34,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:34,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 19:15:34,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-21 19:15:34,559 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand 10 states. [2020-07-21 19:15:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:34,694 INFO L93 Difference]: Finished difference Result 172 states and 238 transitions. [2020-07-21 19:15:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 19:15:34,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-07-21 19:15:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:34,698 INFO L225 Difference]: With dead ends: 172 [2020-07-21 19:15:34,698 INFO L226 Difference]: Without dead ends: 132 [2020-07-21 19:15:34,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-07-21 19:15:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-21 19:15:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2020-07-21 19:15:34,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-21 19:15:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2020-07-21 19:15:34,719 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 42 [2020-07-21 19:15:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:34,719 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2020-07-21 19:15:34,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 19:15:34,720 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2020-07-21 19:15:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 19:15:34,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:34,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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 19:15:34,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:34,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:34,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:34,933 INFO L82 PathProgramCache]: Analyzing trace with hash 481333020, now seen corresponding path program 1 times [2020-07-21 19:15:34,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:34,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021151348] [2020-07-21 19:15:34,934 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:34,980 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:34,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:34,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 19:15:34,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:35,089 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 19:15:35,093 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 19:15:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 19:15:35,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:35,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021151348] [2020-07-21 19:15:35,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:35,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-21 19:15:35,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692279954] [2020-07-21 19:15:35,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 19:15:35,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:35,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 19:15:35,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-07-21 19:15:35,122 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 13 states. [2020-07-21 19:15:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:35,425 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2020-07-21 19:15:35,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 19:15:35,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-07-21 19:15:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:35,428 INFO L225 Difference]: With dead ends: 138 [2020-07-21 19:15:35,428 INFO L226 Difference]: Without dead ends: 136 [2020-07-21 19:15:35,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-07-21 19:15:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-21 19:15:35,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2020-07-21 19:15:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 19:15:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2020-07-21 19:15:35,447 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 42 [2020-07-21 19:15:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:35,448 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2020-07-21 19:15:35,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 19:15:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2020-07-21 19:15:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 19:15:35,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:35,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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 19:15:35,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:35,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:35,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1947506722, now seen corresponding path program 1 times [2020-07-21 19:15:35,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:35,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450934371] [2020-07-21 19:15:35,665 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:35,705 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:35,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:35,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 19:15:35,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 19:15:35,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:15:37,113 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 19:15:39,736 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 19:15:41,171 WARN L838 $PredicateComparison]: unable to prove that (forall ((addflt_~b Int)) (<= (mod addflt_~b 4294967296) (mod c_main_~a~0 4294967296))) is different from false [2020-07-21 19:15:41,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450934371] [2020-07-21 19:15:41,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:15:41,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 19:15:41,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339002281] [2020-07-21 19:15:41,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 19:15:41,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:41,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 19:15:41,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=71, Unknown=2, NotChecked=16, Total=110 [2020-07-21 19:15:41,191 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand 8 states. [2020-07-21 19:15:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:41,357 INFO L93 Difference]: Finished difference Result 202 states and 269 transitions. [2020-07-21 19:15:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 19:15:41,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-07-21 19:15:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:41,363 INFO L225 Difference]: With dead ends: 202 [2020-07-21 19:15:41,363 INFO L226 Difference]: Without dead ends: 170 [2020-07-21 19:15:41,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=31, Invalid=103, Unknown=2, NotChecked=20, Total=156 [2020-07-21 19:15:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-07-21 19:15:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2020-07-21 19:15:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-21 19:15:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 203 transitions. [2020-07-21 19:15:41,385 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 203 transitions. Word has length 42 [2020-07-21 19:15:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:41,386 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 203 transitions. [2020-07-21 19:15:41,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 19:15:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 203 transitions. [2020-07-21 19:15:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 19:15:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:41,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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 19:15:41,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:41,589 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:41,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2004765024, now seen corresponding path program 1 times [2020-07-21 19:15:41,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:41,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111404819] [2020-07-21 19:15:41,590 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:41,693 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:41,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:15:41,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:15:41,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:41,733 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:15:41,733 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:15:41,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:41,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:15:41 BoogieIcfgContainer [2020-07-21 19:15:41,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:15:41,980 INFO L168 Benchmark]: Toolchain (without parser) took 11279.44 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 101.6 MB in the beginning and 184.7 MB in the end (delta: -83.1 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,980 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.23 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 181.1 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,982 INFO L168 Benchmark]: Boogie Preprocessor took 44.32 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,983 INFO L168 Benchmark]: RCFGBuilder took 541.61 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 153.5 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,984 INFO L168 Benchmark]: TraceAbstraction took 10251.07 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 153.5 MB in the beginning and 184.7 MB in the end (delta: -31.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:41,987 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.23 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 181.1 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.32 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.61 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 153.5 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10251.07 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 153.5 MB in the beginning and 184.7 MB in the end (delta: -31.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; VAL [ea=127, eb=127, ma=33554432, mb=33554431] [L231] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L19] COND TRUE ! m [L20] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L70] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L231] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=127, ma=33554432, mb=33554431] [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L19] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L25] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L47] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L49] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L70] return (__retres4); VAL [\old(e)=127, \old(m)=33554432, \result=4294967295, __retres4=4294967295, e=127, m=33554432] [L232] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=127, ma=33554432, mb=33554431, zero=0] [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=127, \old(m)=33554431] [L15] unsigned int res ; [L16] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554431, e=127, m=33554431] [L19] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554431, e=127, m=33554431] [L25] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554431, e=127, m=33554431] [L47] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554431, e=127, m=33554431] [L49] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=127, \old(m)=33554431, e=127, m=33554431] [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res VAL [\old(e)=127, \old(m)=33554431, __retres4=4278190080, e=127, res=4278190080] [L70] return (__retres4); VAL [\old(e)=127, \old(m)=33554431, \result=108086391040114688, __retres4=4278190080, e=127, res=4278190080] [L233] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=108086391040114688, ea=127, eb=127, ma=33554432, mb=33554431, zero=0] [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) VAL [\old(a)=4294967295, \old(b)=4278190080] [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; VAL [\old(a)=4294967295, \old(b)=4278190080, a=4294967295, b=4278190080] [L84] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=4278190080, a=4294967295, b=4278190080] [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) VAL [\old(a)=4294967295, \old(b)=4278190080, a=4294967295, b=4278190080, ea=127, eb=2147483519] [L104] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 564 SDtfs, 254 SDslu, 3974 SDs, 0 SdLazy, 591 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 261 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 106 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 282 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 23196 SizeOfPredicates, 25 NumberOfNonLiveVariables, 695 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 124/137 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...