/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_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:21,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:21,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:21,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:21,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:21,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:21,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:21,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:21,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:21,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:21,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:21,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:21,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:21,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:21,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:21,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:21,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:21,534 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 22:36:21,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:21,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:21,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:21,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:21,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:21,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:21,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:21,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:21,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:21,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:21,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:21,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:21,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:21,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:21,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:21,550 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:21,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:21,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:21,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:21,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:21,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:21,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:21,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:21,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:21,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:21,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:21,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:21,963 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:21,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2021-02-23 22:36:22,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcbeba89/e8532c1b1270405789b89c4479e2f575/FLAG068dbaa1a [2021-02-23 22:36:22,704 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:22,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2021-02-23 22:36:22,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcbeba89/e8532c1b1270405789b89c4479e2f575/FLAG068dbaa1a [2021-02-23 22:36:23,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adcbeba89/e8532c1b1270405789b89c4479e2f575 [2021-02-23 22:36:23,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:23,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:23,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:23,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:23,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:23,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d472094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23, skipping insertion in model container [2021-02-23 22:36:23,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:23,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:23,395 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_1232a.c[1656,1669] [2021-02-23 22:36:23,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:23,422 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:23,480 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_1232a.c[1656,1669] [2021-02-23 22:36:23,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:23,505 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:23,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23 WrapperNode [2021-02-23 22:36:23,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:23,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:23,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:23,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:23,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (1/1) ... [2021-02-23 22:36:23,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:23,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:23,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:23,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:23,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (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 22:36:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:23,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-23 22:36:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2021-02-23 22:36:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 22:36:23,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:36:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-23 22:36:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2021-02-23 22:36:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 22:36:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:23,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:24,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:24,318 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 22:36:24,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:24 BoogieIcfgContainer [2021-02-23 22:36:24,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:24,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:24,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:24,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:24,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:23" (1/3) ... [2021-02-23 22:36:24,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7140b702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:24, skipping insertion in model container [2021-02-23 22:36:24,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:23" (2/3) ... [2021-02-23 22:36:24,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7140b702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:24, skipping insertion in model container [2021-02-23 22:36:24,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:24" (3/3) ... [2021-02-23 22:36:24,333 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-02-23 22:36:24,342 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:24,349 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:24,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:24,409 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:24,410 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:24,410 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:24,410 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:24,411 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:24,411 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:24,411 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:24,411 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-02-23 22:36:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 22:36:24,448 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:24,449 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] [2021-02-23 22:36:24,449 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 515290282, now seen corresponding path program 1 times [2021-02-23 22:36:24,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:24,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835026823] [2021-02-23 22:36:24,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:24,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:24,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:24,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:24,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:24,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:24,848 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 22:36:24,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835026823] [2021-02-23 22:36:24,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:24,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:24,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570373789] [2021-02-23 22:36:24,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:24,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:24,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:24,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:24,877 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2021-02-23 22:36:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:25,373 INFO L93 Difference]: Finished difference Result 161 states and 189 transitions. [2021-02-23 22:36:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:25,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-23 22:36:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:25,407 INFO L225 Difference]: With dead ends: 161 [2021-02-23 22:36:25,407 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:36:25,413 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 [2021-02-23 22:36:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:36:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-23 22:36:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 22:36:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-23 22:36:25,499 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 39 [2021-02-23 22:36:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:25,500 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-23 22:36:25,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-23 22:36:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 22:36:25,503 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:25,503 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] [2021-02-23 22:36:25,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:25,504 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash -97548509, now seen corresponding path program 1 times [2021-02-23 22:36:25,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:25,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347811304] [2021-02-23 22:36:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:25,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:25,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:25,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:25,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:25,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:25,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:25,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:25,836 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 22:36:25,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347811304] [2021-02-23 22:36:25,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:25,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:25,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381137269] [2021-02-23 22:36:25,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:25,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:25,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:25,841 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-23 22:36:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:26,235 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-02-23 22:36:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:26,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 22:36:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:26,240 INFO L225 Difference]: With dead ends: 116 [2021-02-23 22:36:26,240 INFO L226 Difference]: Without dead ends: 87 [2021-02-23 22:36:26,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:36:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-23 22:36:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-02-23 22:36:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:36:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 22:36:26,261 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 46 [2021-02-23 22:36:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:26,261 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 22:36:26,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 22:36:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:36:26,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:26,264 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] [2021-02-23 22:36:26,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:26,264 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash 668113358, now seen corresponding path program 1 times [2021-02-23 22:36:26,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:26,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293603111] [2021-02-23 22:36:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:36:26,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:26,544 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 22:36:26,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293603111] [2021-02-23 22:36:26,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:26,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:26,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606526869] [2021-02-23 22:36:26,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:26,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:26,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:26,549 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-02-23 22:36:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:26,830 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-02-23 22:36:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:26,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-23 22:36:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:26,833 INFO L225 Difference]: With dead ends: 120 [2021-02-23 22:36:26,833 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 22:36:26,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:36:26,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 22:36:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-02-23 22:36:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:36:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 22:36:26,850 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 49 [2021-02-23 22:36:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:26,850 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 22:36:26,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 22:36:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:36:26,852 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:26,853 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] [2021-02-23 22:36:26,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:36:26,853 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:26,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1380588046, now seen corresponding path program 1 times [2021-02-23 22:36:26,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:26,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418304996] [2021-02-23 22:36:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:26,878 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:26,914 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:26,964 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:26,964 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:26,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:36:27,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:27 BoogieIcfgContainer [2021-02-23 22:36:27,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:27,037 INFO L168 Benchmark]: Toolchain (without parser) took 3988.35 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.6 MB in the beginning and 122.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 37.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:27,038 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:27,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 116.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:27,040 INFO L168 Benchmark]: Boogie Preprocessor took 95.59 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 114.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:27,040 INFO L168 Benchmark]: RCFGBuilder took 718.48 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 125.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:27,041 INFO L168 Benchmark]: TraceAbstraction took 2710.69 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 125.0 MB in the beginning and 122.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:27,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 439.92 ms. Allocated memory is still 152.0 MB. Free memory was 127.3 MB in the beginning and 116.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.59 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 114.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 718.48 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 125.5 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2710.69 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 125.0 MB in the beginning and 122.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; VAL [x=0] [L67] float y = -0.0f; VAL [x=0] [L68] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578698] [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L15] __uint32_t w; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={3:0}, x=0] [L19] gf_u.value = (x) VAL [\old(x)=0, gf_u={3:0}, x=0] [L20] EXPR gf_u.word VAL [\old(x)=0, gf_u={3:0}, gf_u.word=4286578689, x=0] [L20] (w) = gf_u.word VAL [\old(x)=0, gf_u={3:0}, gf_u.word=4286578689, w=4286578689, x=0] [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=0, w=4286578689, x=0] [L34] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578698, __fpclassify_float(x)=0, x=0, y=4286578698] [L38] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=0, \old(y)=4286578698, __fpclassify_float(x)=0, x=0, y=4286578698] [L39] return y; VAL [\old(x)=0, \old(y)=4286578698, \result=4286578698, x=0, y=4286578698] [L68] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578698, x=0, y=4286578698] [L68] float res = fmin_float(x, y); VAL [fmin_float(x, y)=4286578698, res=4286578698, x=0, y=4286578698] [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578698, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578698] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) VAL [res=4286578698, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578698] [L72] reach_error() VAL [res=4286578698, x=0, y=4286578698] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 270 SDtfs, 53 SDslu, 492 SDs, 0 SdLazy, 364 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 13591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...