/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:44:29,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:44:29,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:44:29,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:44:29,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:44:29,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:44:29,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:44:29,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:44:29,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:44:29,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:44:29,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:44:29,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:44:29,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:44:29,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:44:29,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:44:29,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:44:29,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:44:29,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:44:29,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:44:29,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:44:29,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:44:29,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:44:29,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:44:29,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:44:29,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:44:29,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:44:29,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:44:29,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:44:29,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:44:29,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:44:29,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:44:29,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:44:29,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:44:29,686 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:44:29,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:44:29,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:44:29,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:44:29,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:44:29,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:44:29,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:44:29,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:44:29,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:44:29,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:44:29,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:44:29,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:44:29,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:44:29,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:44:29,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:44:29,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:44:29,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:44:29,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:29,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:44:29,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:44:29,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:44:29,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:44:29,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:44:29,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:44:30,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:44:30,000 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:44:30,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 15:44:30,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abff4e75b/5537930938944e6299e221a96bd17efe/FLAG2ea5ca274 [2020-07-21 15:44:30,525 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:44:30,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 15:44:30,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abff4e75b/5537930938944e6299e221a96bd17efe/FLAG2ea5ca274 [2020-07-21 15:44:30,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abff4e75b/5537930938944e6299e221a96bd17efe [2020-07-21 15:44:30,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:44:30,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:44:30,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:30,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:44:30,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:44:30,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:30" (1/1) ... [2020-07-21 15:44:30,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f44038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:30, skipping insertion in model container [2020-07-21 15:44:30,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:44:30" (1/1) ... [2020-07-21 15:44:30,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:44:30,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:44:31,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:31,164 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:44:31,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:44:31,331 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:44:31,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31 WrapperNode [2020-07-21 15:44:31,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:44:31,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:44:31,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:44:31,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:44:31,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (1/1) ... [2020-07-21 15:44:31,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:44:31,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:44:31,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:44:31,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:44:31,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (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 15:44:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:44:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:44:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 15:44:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 15:44:31,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 15:44:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:44:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:44:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 15:44:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 15:44:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 15:44:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:44:31,457 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 15:44:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:44:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:44:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 15:44:31,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:44:32,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:44:32,012 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 15:44:32,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:32 BoogieIcfgContainer [2020-07-21 15:44:32,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:44:32,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:44:32,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:44:32,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:44:32,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:44:30" (1/3) ... [2020-07-21 15:44:32,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c13c796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:32, skipping insertion in model container [2020-07-21 15:44:32,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:44:31" (2/3) ... [2020-07-21 15:44:32,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c13c796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:44:32, skipping insertion in model container [2020-07-21 15:44:32,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:44:32" (3/3) ... [2020-07-21 15:44:32,025 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-21 15:44:32,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:44:32,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:44:32,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:44:32,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:44:32,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:44:32,084 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:44:32,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:44:32,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:44:32,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:44:32,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:44:32,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:44:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 15:44:32,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 15:44:32,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:32,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:32,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:32,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-21 15:44:32,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:32,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194714167] [2020-07-21 15:44:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:32,263 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:32,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:44:32,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:44:32,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:44:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:44:32,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:44:32,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194714167] [2020-07-21 15:44:32,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:44:32,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:44:32,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521841720] [2020-07-21 15:44:32,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:44:32,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:44:32,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:44:32,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:32,326 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 15:44:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:44:32,360 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 15:44:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:44:32,361 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 15:44:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:44:32,373 INFO L225 Difference]: With dead ends: 138 [2020-07-21 15:44:32,373 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 15:44:32,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:44:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 15:44:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 15:44:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 15:44:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 15:44:32,423 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 15:44:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:44:32,424 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 15:44:32,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:44:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 15:44:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 15:44:32,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:44:32,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:44:32,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:32,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:44:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:44:32,629 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-21 15:44:32,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:44:32,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759417979] [2020-07-21 15:44:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:32,756 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:44:32,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:44:32,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:44:32,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:44:32,844 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:44:32,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:44:33,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:44:33,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:44:33 BoogieIcfgContainer [2020-07-21 15:44:33,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:44:33,091 INFO L168 Benchmark]: Toolchain (without parser) took 2196.05 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 102.8 MB in the beginning and 197.2 MB in the end (delta: -94.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:44:33,092 INFO L168 Benchmark]: CDTParser took 0.47 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.53 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 177.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,094 INFO L168 Benchmark]: Boogie Preprocessor took 61.21 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 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 15:44:33,095 INFO L168 Benchmark]: RCFGBuilder took 622.63 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 138.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:44:33,096 INFO L168 Benchmark]: TraceAbstraction took 1070.43 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 137.9 MB in the beginning and 197.2 MB in the end (delta: -59.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 15:44:33,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 435.53 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.4 MB in the beginning and 177.7 MB in the end (delta: -75.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.21 ms. Allocated memory is still 202.4 MB. Free memory was 177.7 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 622.63 ms. Allocated memory is still 202.4 MB. Free memory was 174.9 MB in the beginning and 138.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1070.43 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 137.9 MB in the beginning and 197.2 MB in the end (delta: -59.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={18460:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={18460:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={18460:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=0, one_fmod=1, x=3, Zero_fmod={18460:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={18460:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={18460:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={18460:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=4, lx=15, ly=19, one_fmod=1, sx=1323, x=3, y=4, Zero_fmod={18460:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=0, lx=15, ly=19, one_fmod=1, sx=1323, x=3, y=4, Zero_fmod={18460:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={18460:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={18460:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={18460:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, 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...