/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:48,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:48,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:48,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:48,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:48,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:48,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:48,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:48,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:48,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:48,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:48,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:48,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:48,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:48,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:48,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:48,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:48,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:48,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:48,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:48,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:48,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:48,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:48,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:48,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:48,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:48,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:48,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:48,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:07:48,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:48,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:48,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:48,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:48,840 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:48,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:48,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:48,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:48,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:48,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:48,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:48,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:48,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:48,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:48,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:48,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:48,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:48,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:48,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:48,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:48,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:48,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:48,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:48,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:48,845 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 -> 4 [2020-07-20 21:07:49,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:49,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:49,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:49,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:49,148 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:49,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 21:07:49,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f055f1906/515c0773ccf0446fa3a414b8e44a5b1c/FLAG31b6bf3b6 [2020-07-20 21:07:49,656 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:49,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 21:07:49,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f055f1906/515c0773ccf0446fa3a414b8e44a5b1c/FLAG31b6bf3b6 [2020-07-20 21:07:49,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f055f1906/515c0773ccf0446fa3a414b8e44a5b1c [2020-07-20 21:07:50,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:50,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:50,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:50,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:50,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:50,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2308d100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50, skipping insertion in model container [2020-07-20 21:07:50,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:50,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:50,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:50,349 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:50,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:50,523 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:50,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50 WrapperNode [2020-07-20 21:07:50,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:50,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:50,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:50,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:50,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... [2020-07-20 21:07:50,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:50,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:50,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:50,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:50,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 21:07:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-20 21:07:50,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 21:07:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 21:07:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-20 21:07:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 21:07:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:51,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:51,077 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 21:07:51,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:51 BoogieIcfgContainer [2020-07-20 21:07:51,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:51,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:51,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:51,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:51,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:49" (1/3) ... [2020-07-20 21:07:51,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585c23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:51, skipping insertion in model container [2020-07-20 21:07:51,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:50" (2/3) ... [2020-07-20 21:07:51,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585c23fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:51, skipping insertion in model container [2020-07-20 21:07:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:51" (3/3) ... [2020-07-20 21:07:51,090 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-20 21:07:51,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:51,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:51,136 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:51,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:51,159 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:51,160 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:51,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:51,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:51,160 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:51,160 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:51,160 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-20 21:07:51,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:07:51,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:51,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:51,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-20 21:07:51,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:51,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006177569] [2020-07-20 21:07:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:51,363 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:07:51,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:51,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:07:51,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:51,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006177569] [2020-07-20 21:07:51,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:51,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:51,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499516268] [2020-07-20 21:07:51,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:51,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:51,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:51,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:51,427 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-20 21:07:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:51,478 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-20 21:07:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:51,481 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 21:07:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:51,490 INFO L225 Difference]: With dead ends: 112 [2020-07-20 21:07:51,491 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 21:07:51,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 21:07:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 21:07:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 21:07:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-20 21:07:51,553 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-20 21:07:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:51,554 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-20 21:07:51,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:51,554 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-20 21:07:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 21:07:51,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:51,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:51,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:51,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-20 21:07:51,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:51,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575244598] [2020-07-20 21:07:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:51,931 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:51,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:51,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:51,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:52,002 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:52,002 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:52,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:52,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:52 BoogieIcfgContainer [2020-07-20 21:07:52,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:52,256 INFO L168 Benchmark]: Toolchain (without parser) took 2246.77 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 100.6 MB in the beginning and 96.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,257 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.08 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 178.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,259 INFO L168 Benchmark]: Boogie Preprocessor took 52.68 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 175.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,260 INFO L168 Benchmark]: RCFGBuilder took 504.94 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 147.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,261 INFO L168 Benchmark]: TraceAbstraction took 1169.82 ms. Allocated memory is still 201.9 MB. Free memory was 147.3 MB in the beginning and 96.7 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:52,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 513.08 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 178.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.68 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 175.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 504.94 ms. Allocated memory is still 201.9 MB. Free memory was 175.9 MB in the beginning and 147.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1169.82 ms. Allocated memory is still 201.9 MB. Free memory was 147.3 MB in the beginning and 96.7 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=5, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={3:0}] [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={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=4, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=0, hy=2139095041, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...