/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:00,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:00,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:00,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:00,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:00,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:00,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:00,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:00,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:00,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:00,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:00,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:00,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:00,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:00,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:00,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:00,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:00,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:36:00,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:00,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:00,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:00,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:00,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:00,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:00,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:00,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:00,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:00,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:00,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:00,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:00,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:00,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:00,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:00,788 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:00,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:00,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:00,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:00,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:00,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:00,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:00,790 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:01,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:01,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:01,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:01,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:01,263 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:01,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2021-02-23 22:36:01,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52660ed0a/c0c902b26a22454990040eb1bfa02470/FLAG4e391151e [2021-02-23 22:36:01,960 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:01,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2021-02-23 22:36:01,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52660ed0a/c0c902b26a22454990040eb1bfa02470/FLAG4e391151e [2021-02-23 22:36:02,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52660ed0a/c0c902b26a22454990040eb1bfa02470 [2021-02-23 22:36:02,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:02,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:02,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:02,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:02,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:02,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffc25e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02, skipping insertion in model container [2021-02-23 22:36:02,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:02,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:02,646 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c[1607,1620] [2021-02-23 22:36:02,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:02,658 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:02,683 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c[1607,1620] [2021-02-23 22:36:02,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:02,704 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:02,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02 WrapperNode [2021-02-23 22:36:02,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:02,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:02,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:02,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:02,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (1/1) ... [2021-02-23 22:36:02,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:02,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:02,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:02,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:02,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (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 [2021-02-23 22:36:02,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2021-02-23 22:36:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-23 22:36:02,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:02,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:02,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:02,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:02,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:03,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:03,306 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 22:36:03,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:03 BoogieIcfgContainer [2021-02-23 22:36:03,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:03,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:03,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:03,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:03,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:02" (1/3) ... [2021-02-23 22:36:03,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5263617d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:03, skipping insertion in model container [2021-02-23 22:36:03,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:02" (2/3) ... [2021-02-23 22:36:03,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5263617d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:03, skipping insertion in model container [2021-02-23 22:36:03,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:03" (3/3) ... [2021-02-23 22:36:03,323 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072a.c [2021-02-23 22:36:03,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:03,342 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:03,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:03,382 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:03,382 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:03,382 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:03,382 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:03,383 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:03,383 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:03,383 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:03,383 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-23 22:36:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 22:36:03,409 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:03,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:36:03,411 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1883976510, now seen corresponding path program 1 times [2021-02-23 22:36:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:03,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948281679] [2021-02-23 22:36:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:03,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:03,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:36:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:03,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 22:36:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:03,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:03,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:36:03,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948281679] [2021-02-23 22:36:03,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:03,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:03,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936487937] [2021-02-23 22:36:03,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:03,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:03,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:03,795 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2021-02-23 22:36:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:04,025 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2021-02-23 22:36:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:04,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-23 22:36:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:04,036 INFO L225 Difference]: With dead ends: 141 [2021-02-23 22:36:04,037 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 22:36:04,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:36:04,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 22:36:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 22:36:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:36:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-02-23 22:36:04,094 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 40 [2021-02-23 22:36:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:04,094 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-02-23 22:36:04,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-02-23 22:36:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 22:36:04,097 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:04,098 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, 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] [2021-02-23 22:36:04,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:04,098 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash -444663611, now seen corresponding path program 1 times [2021-02-23 22:36:04,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:04,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334454007] [2021-02-23 22:36:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:04,249 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:04,369 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:04,422 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:04,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:04,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:04,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:04 BoogieIcfgContainer [2021-02-23 22:36:04,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:04,477 INFO L168 Benchmark]: Toolchain (without parser) took 2126.42 ms. Allocated memory is still 152.0 MB. Free memory was 128.5 MB in the beginning and 66.7 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:04,478 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:04,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.71 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:04,480 INFO L168 Benchmark]: Boogie Preprocessor took 42.83 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 115.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:04,481 INFO L168 Benchmark]: RCFGBuilder took 558.35 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 133.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:04,482 INFO L168 Benchmark]: TraceAbstraction took 1165.74 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 66.7 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:04,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.71 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.83 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 115.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 558.35 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 133.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1165.74 ms. Allocated memory is still 152.0 MB. Free memory was 133.2 MB in the beginning and 66.7 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 69]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 64, overapproximation of bitwiseAnd at line 53. Possible FailurePath: [L64] float x = 1.0f / 0.0f; [L65] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934593] [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934593, x=8589934593] [L17] ieee_float_shape_type gf_u; VAL [\old(x)=8589934593, gf_u={8:0}, x=8589934593] [L18] gf_u.value = (x) VAL [\old(x)=8589934593, gf_u={8:0}, x=8589934593] [L19] EXPR gf_u.word VAL [\old(x)=8589934593, gf_u={8:0}, gf_u.word=8589934590, x=8589934593] [L19] (w) = gf_u.word VAL [\old(x)=8589934593, gf_u={8:0}, gf_u.word=8589934590, w=-2, x=8589934593] [L21] signbit = w & 0x80000000 VAL [\old(x)=8589934593, signbit=-3, w=-2, x=8589934593] [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934593, exponent_less_127=23, signbit=-3, w=-2, x=8589934593] [L23] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934593, exponent_less_127=23, signbit=-3, w=-2, x=8589934593] [L39] COND FALSE !(exponent_less_127 == 255) VAL [\old(x)=8589934593, exponent_less_127=23, signbit=-3, w=-2, x=8589934593] [L42] return x; VAL [\old(x)=8589934593, \result=8589934593, exponent_less_127=23, signbit=-3, w=-2, x=8589934593] [L65] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934593, x=8589934593] [L65] float res = trunc_float(x); VAL [res=8589934593, trunc_float(x)=8589934593, x=8589934593] [L68] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934593] [L47] __int32_t ix; VAL [\old(x)=8589934593, x=8589934593] [L49] ieee_float_shape_type gf_u; VAL [\old(x)=8589934593, gf_u={3:0}, x=8589934593] [L50] gf_u.value = (x) VAL [\old(x)=8589934593, gf_u={3:0}, x=8589934593] [L51] EXPR gf_u.word VAL [\old(x)=8589934593, gf_u={3:0}, gf_u.word=4294967295, x=8589934593] [L51] (ix) = gf_u.word VAL [\old(x)=8589934593, gf_u={3:0}, gf_u.word=4294967295, ix=-1, x=8589934593] [L53] ix &= 0x7fffffff VAL [\old(x)=8589934593, x=8589934593] [L54] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934593, \result=0, ix=0, x=8589934593] [L68] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934593, x=8589934593] [L68] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, res=8589934593, x=8589934593] [L69] reach_error() VAL [res=8589934593, x=8589934593] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 83 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: 78 SDtfs, 15 SDslu, 50 SDs, 0 SdLazy, 92 SolverSat, 6 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 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...