/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/float_req_bl_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:57,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:57,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:57,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:57,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:57,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:57,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:57,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:57,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:57,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:57,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:57,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:57,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:57,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:57,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:57,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:57,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:57,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:57,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:57,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:57,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:57,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:57,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:57,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:57,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:57,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:57,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:57,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:57,805 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 17:55:57,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:57,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:57,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:57,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:57,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:57,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:57,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:57,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:57,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:57,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:57,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:57,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:57,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:57,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:57,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:57,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:57,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:57,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:57,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:57,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:57,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:57,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:57,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:57,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:57,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:57,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:57,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:57,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:57,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:57,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:58,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:58,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:58,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:58,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:58,252 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:58,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2020-10-23 17:55:58,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf75b20/c1aaea1d68f5415eaa3cfc915de9a236/FLAG74dee22b1 [2020-10-23 17:55:58,901 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:58,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2020-10-23 17:55:58,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf75b20/c1aaea1d68f5415eaa3cfc915de9a236/FLAG74dee22b1 [2020-10-23 17:55:59,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eaf75b20/c1aaea1d68f5415eaa3cfc915de9a236 [2020-10-23 17:55:59,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:59,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:59,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:59,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:59,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:59,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768a3f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59, skipping insertion in model container [2020-10-23 17:55:59,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:59,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:59,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:59,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:59,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:59,524 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:59,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59 WrapperNode [2020-10-23 17:55:59,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:59,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:59,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:59,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:59,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (1/1) ... [2020-10-23 17:55:59,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:59,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:59,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:59,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:59,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (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 17:55:59,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-10-23 17:55:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 17:55:59,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-10-23 17:55:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:00,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:00,144 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-23 17:56:00,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:00 BoogieIcfgContainer [2020-10-23 17:56:00,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:00,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:00,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:00,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:00,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:59" (1/3) ... [2020-10-23 17:56:00,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:00, skipping insertion in model container [2020-10-23 17:56:00,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:59" (2/3) ... [2020-10-23 17:56:00,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:00, skipping insertion in model container [2020-10-23 17:56:00,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:00" (3/3) ... [2020-10-23 17:56:00,156 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072a.c [2020-10-23 17:56:00,169 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:00,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:00,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:00,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:00,225 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:00,225 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:00,225 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:00,226 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:00,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:00,226 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:00,226 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 17:56:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:56:00,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:00,252 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] [2020-10-23 17:56:00,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:00,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -265902931, now seen corresponding path program 1 times [2020-10-23 17:56:00,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:00,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036722035] [2020-10-23 17:56:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:00,628 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-23 17:56:00,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 17:56:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:00,747 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 17:56:00,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036722035] [2020-10-23 17:56:00,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:00,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:00,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511991274] [2020-10-23 17:56:00,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:00,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:00,779 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-23 17:56:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:00,984 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2020-10-23 17:56:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:00,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-23 17:56:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:00,994 INFO L225 Difference]: With dead ends: 71 [2020-10-23 17:56:00,994 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 17:56:00,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 17:56:01,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-23 17:56:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 17:56:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-23 17:56:01,045 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 25 [2020-10-23 17:56:01,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:01,046 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-23 17:56:01,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:01,046 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-23 17:56:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:56:01,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:01,047 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 17:56:01,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:01,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:01,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1714915755, now seen corresponding path program 1 times [2020-10-23 17:56:01,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:01,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767325662] [2020-10-23 17:56:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:01,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:01,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:01,273 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:01,273 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:01,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:01,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:01 BoogieIcfgContainer [2020-10-23 17:56:01,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:01,311 INFO L168 Benchmark]: Toolchain (without parser) took 2063.81 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 78.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:01,311 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:01,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:01,313 INFO L168 Benchmark]: Boogie Preprocessor took 60.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:01,314 INFO L168 Benchmark]: RCFGBuilder took 559.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 129.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:01,315 INFO L168 Benchmark]: TraceAbstraction took 1160.66 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 78.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:01,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 559.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 129.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1160.66 ms. Allocated memory is still 151.0 MB. Free memory was 128.3 MB in the beginning and 78.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 53. Possible FailurePath: [L64] float x = 1.0f / 0.0f; [L65] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934596] [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934596, x=8589934596] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L23] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L65] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934594, x=8589934596] [L65] float res = trunc_float(x); [L68] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934594] [L47] __int32_t ix; VAL [\old(x)=8589934594, x=8589934594] [L49] ieee_float_shape_type gf_u; [L50] gf_u.value = (x) [L51] EXPR gf_u.word [L51] (ix) = gf_u.word [L53] ix &= 0x7fffffff [L54] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934594, \result=0, ix=0, x=8589934594] [L68] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934594, x=8589934596] [L68] COND TRUE !isinf_float(res) [L69] CALL reach_error() [L4] __assert_fail("0", "float_req_bl_1072a.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 36 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1872 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...