/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:03,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:03,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:03,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:03,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:03,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:03,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:03,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:03,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:03,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:03,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:03,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:03,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:03,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:03,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:03,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:03,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:03,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:03,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:03,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:03,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:03,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:03,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:03,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:03,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:03,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:03,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:03,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:03,728 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 [2020-10-23 17:55:03,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:03,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:03,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:03,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:03,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:03,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:03,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:03,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:03,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:03,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:03,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:03,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:03,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:03,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:03,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:03,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:03,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:03,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:03,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:03,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:03,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:03,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:03,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:03,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:03,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:03,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:03,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:03,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:03,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:03,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:04,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:04,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:04,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:04,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:04,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:04,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-10-23 17:55:04,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4106b119/43930f3ed7724197bac36126df037727/FLAGd0dbfb8b5 [2020-10-23 17:55:05,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:05,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-10-23 17:55:05,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4106b119/43930f3ed7724197bac36126df037727/FLAGd0dbfb8b5 [2020-10-23 17:55:05,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4106b119/43930f3ed7724197bac36126df037727 [2020-10-23 17:55:05,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:05,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:05,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:05,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:05,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:05,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d9adb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05, skipping insertion in model container [2020-10-23 17:55:05,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:05,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:05,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:05,411 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:05,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:05,496 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:05,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05 WrapperNode [2020-10-23 17:55:05,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:05,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:05,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:05,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:05,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (1/1) ... [2020-10-23 17:55:05,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:05,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:05,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:05,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:05,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (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 [2020-10-23 17:55:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:05,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:05,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 17:55:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-23 17:55:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-23 17:55:05,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:05,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:05,696 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 17:55:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-23 17:55:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-23 17:55:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:06,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:06,132 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-23 17:55:06,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:06 BoogieIcfgContainer [2020-10-23 17:55:06,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:06,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:06,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:06,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:06,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:05" (1/3) ... [2020-10-23 17:55:06,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d361c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:06, skipping insertion in model container [2020-10-23 17:55:06,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:05" (2/3) ... [2020-10-23 17:55:06,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d361c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:06, skipping insertion in model container [2020-10-23 17:55:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:06" (3/3) ... [2020-10-23 17:55:06,143 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-23 17:55:06,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:06,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:06,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:06,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:06,201 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:06,201 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:06,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:06,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:06,202 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:06,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:06,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-23 17:55:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:06,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:06,234 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] [2020-10-23 17:55:06,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:06,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1719514889, now seen corresponding path program 1 times [2020-10-23 17:55:06,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:06,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865039879] [2020-10-23 17:55:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:06,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 17:55:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:55:06,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865039879] [2020-10-23 17:55:06,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:06,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:06,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78951109] [2020-10-23 17:55:06,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:06,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:06,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:06,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:06,567 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-23 17:55:06,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:06,814 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-23 17:55:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:06,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 17:55:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:06,824 INFO L225 Difference]: With dead ends: 59 [2020-10-23 17:55:06,824 INFO L226 Difference]: Without dead ends: 28 [2020-10-23 17:55:06,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-23 17:55:06,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-23 17:55:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-23 17:55:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-23 17:55:06,873 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 24 [2020-10-23 17:55:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:06,874 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-23 17:55:06,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-23 17:55:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:55:06,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:06,875 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] [2020-10-23 17:55:06,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:06,876 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:06,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1939701542, now seen corresponding path program 1 times [2020-10-23 17:55:06,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:06,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360571753] [2020-10-23 17:55:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:07,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:07,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:07,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:07,174 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:07,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:07,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:07 BoogieIcfgContainer [2020-10-23 17:55:07,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:07,217 INFO L168 Benchmark]: Toolchain (without parser) took 2158.50 ms. Allocated memory is still 159.4 MB. Free memory was 134.7 MB in the beginning and 83.8 MB in the end (delta: 50.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:07,218 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:07,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.17 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:07,220 INFO L168 Benchmark]: Boogie Preprocessor took 98.75 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:07,221 INFO L168 Benchmark]: RCFGBuilder took 534.71 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 134.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:07,222 INFO L168 Benchmark]: TraceAbstraction took 1078.73 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 83.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:07,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 159.4 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 432.17 ms. Allocated memory is still 159.4 MB. Free memory was 133.9 MB in the beginning and 123.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.75 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 121.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 534.71 ms. Allocated memory is still 159.4 MB. Free memory was 121.7 MB in the beginning and 134.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1078.73 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 83.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: 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 someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) VAL [\old(x)=8589934607] [L47] __uint32_t high; VAL [\old(x)=8589934607, x=8589934607] [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; VAL [\old(x)=8589934607, \result=8589934607, high=16, x=8589934607] [L71] RET, EXPR fabs_double(x) VAL [fabs_double(x)=8589934607, x=8589934607] [L71] double res = fabs_double(x); [L74] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934607] [L33] __int32_t hx, lx; VAL [\old(x)=8589934607, x=8589934607] [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934607, \result=0, hx=2146435072, lx=-2, x=8589934607] [L74] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934607, x=8589934607] [L74] COND TRUE !isinf_double(res) [L75] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 21 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...