/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:55:26,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:55:26,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:55:26,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:55:26,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:55:26,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:55:26,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:55:26,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:55:26,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:55:26,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:55:26,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:55:26,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:55:26,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:55:26,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:55:26,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:55:26,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:55:26,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:55:26,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:55:26,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:55:26,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:55:26,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:55:26,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:55:26,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:55:26,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:55:26,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:55:26,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:55:26,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:55:26,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:55:26,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:55:26,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:55:26,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:55:26,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:55:26,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:55:26,180 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:55:26,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:55:26,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:55:26,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:55:26,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:55:26,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:55:26,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:55:26,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:55:26,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:55:26,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:55:26,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:55:26,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:55:26,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:55:26,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:55:26,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:55:26,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:55:26,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:55:26,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:26,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:55:26,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:55:26,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:55:26,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:55:26,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:26,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:55:26,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:55:26,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:55:26,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:55:26,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:55:26,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:55:26,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:55:26,482 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:55:26,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 12:55:26,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30beb5861/4755a982cfec4ce29cd755799c56d0b4/FLAG41b149037 [2020-07-21 12:55:27,020 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:55:27,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-21 12:55:27,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30beb5861/4755a982cfec4ce29cd755799c56d0b4/FLAG41b149037 [2020-07-21 12:55:27,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30beb5861/4755a982cfec4ce29cd755799c56d0b4 [2020-07-21 12:55:27,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:55:27,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:55:27,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:27,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:55:27,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:55:27,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f805f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27, skipping insertion in model container [2020-07-21 12:55:27,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:55:27,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:55:27,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:27,618 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:55:27,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:55:27,808 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:55:27,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27 WrapperNode [2020-07-21 12:55:27,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:55:27,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:55:27,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:55:27,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:55:27,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... [2020-07-21 12:55:27,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:55:27,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:55:27,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:55:27,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:55:27,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:55:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:55:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:55:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 12:55:27,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 12:55:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:55:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:55:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 12:55:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 12:55:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:55:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 12:55:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:55:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:55:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 12:55:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:55:28,578 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:55:28,578 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 12:55:28,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:28 BoogieIcfgContainer [2020-07-21 12:55:28,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:55:28,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:55:28,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:55:28,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:55:28,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:55:27" (1/3) ... [2020-07-21 12:55:28,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f86241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:28, skipping insertion in model container [2020-07-21 12:55:28,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:55:27" (2/3) ... [2020-07-21 12:55:28,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f86241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:55:28, skipping insertion in model container [2020-07-21 12:55:28,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:55:28" (3/3) ... [2020-07-21 12:55:28,594 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-21 12:55:28,605 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:55:28,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:55:28,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:55:28,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:55:28,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:55:28,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:55:28,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:55:28,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:55:28,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:55:28,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:55:28,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:55:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 12:55:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 12:55:28,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:28,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:28,680 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:28,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:28,686 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-21 12:55:28,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:28,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909196927] [2020-07-21 12:55:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:28,850 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:28,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:55:28,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:55:28,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:55:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:55:28,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:55:28,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909196927] [2020-07-21 12:55:28,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:55:28,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:55:28,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740741403] [2020-07-21 12:55:28,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:55:28,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:55:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:55:28,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:28,925 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 12:55:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:55:28,959 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 12:55:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:55:28,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 12:55:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:55:28,973 INFO L225 Difference]: With dead ends: 138 [2020-07-21 12:55:28,973 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 12:55:28,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:55:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 12:55:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 12:55:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 12:55:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 12:55:29,027 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 12:55:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:55:29,028 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 12:55:29,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:55:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 12:55:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 12:55:29,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:55:29,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:55:29,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:55:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:55:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-21 12:55:29,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:55:29,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13518529] [2020-07-21 12:55:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,373 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:55:29,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:55:29,374 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:55:29,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:55:29,471 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:55:29,471 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:55:29,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:55:29,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:55:29 BoogieIcfgContainer [2020-07-21 12:55:29,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:55:29,729 INFO L168 Benchmark]: Toolchain (without parser) took 2375.84 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 102.1 MB in the beginning and 198.3 MB in the end (delta: -96.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:29,730 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.90 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 177.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,732 INFO L168 Benchmark]: Boogie Preprocessor took 64.63 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,733 INFO L168 Benchmark]: RCFGBuilder took 711.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 139.4 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:55:29,734 INFO L168 Benchmark]: TraceAbstraction took 1139.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.7 MB in the beginning and 198.3 MB in the end (delta: -59.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:55:29,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.90 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.7 MB in the beginning and 177.6 MB in the end (delta: -75.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.63 ms. Allocated memory is still 202.4 MB. Free memory was 177.6 MB in the beginning and 174.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 711.37 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 139.4 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1139.53 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.7 MB in the beginning and 198.3 MB in the end (delta: -59.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=10, one_fmod=1, Zero_fmod={4:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=0, one_fmod=1, x=3, Zero_fmod={4:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={4:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={4:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=17, ly=19, one_fmod=1, sx=18457, x=3, y=5, Zero_fmod={4:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=17, ly=19, one_fmod=1, sx=18457, x=3, y=5, Zero_fmod={4:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 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: 100 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=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...