/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:18,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:18,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:18,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:18,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:18,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:18,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:18,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:18,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:18,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:18,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:18,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:18,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:18,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:18,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:18,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:18,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:18,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:18,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:18,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:18,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:18,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:18,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:18,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:18,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:18,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:18,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:18,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:18,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:18,572 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:18,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:18,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:18,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:18,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:18,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:18,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:18,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:18,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:18,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:18,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:18,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:18,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:18,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:18,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:18,581 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:18,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:18,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:18,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:18,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:18,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:18,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:18,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:18,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:19,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:19,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:19,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:19,019 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:19,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2021-02-21 20:10:19,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860fdf21b/c938f01b02b64f63863a56fa0d7925f0/FLAG74d8152bf [2021-02-21 20:10:19,753 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:19,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c [2021-02-21 20:10:19,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860fdf21b/c938f01b02b64f63863a56fa0d7925f0/FLAG74d8152bf [2021-02-21 20:10:20,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/860fdf21b/c938f01b02b64f63863a56fa0d7925f0 [2021-02-21 20:10:20,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:20,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:20,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:20,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:20,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:20,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bac416c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20, skipping insertion in model container [2021-02-21 20:10:20,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:20,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:20,333 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/double_req_bl_1232a.c[1957,1970] [2021-02-21 20:10:20,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:20,347 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:20,378 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/double_req_bl_1232a.c[1957,1970] [2021-02-21 20:10:20,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:20,405 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:20,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20 WrapperNode [2021-02-21 20:10:20,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:20,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:20,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:20,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:20,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (1/1) ... [2021-02-21 20:10:20,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:20,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:20,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:20,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:20,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (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 [2021-02-21 20:10:20,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:10:20,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-21 20:10:20,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-21 20:10:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:10:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 20:10:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:10:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-21 20:10:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-21 20:10:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:10:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:21,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:21,414 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 20:10:21,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:21 BoogieIcfgContainer [2021-02-21 20:10:21,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:21,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:21,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:21,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:21,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:20" (1/3) ... [2021-02-21 20:10:21,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fdd74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:21, skipping insertion in model container [2021-02-21 20:10:21,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:20" (2/3) ... [2021-02-21 20:10:21,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fdd74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:21, skipping insertion in model container [2021-02-21 20:10:21,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:21" (3/3) ... [2021-02-21 20:10:21,427 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2021-02-21 20:10:21,435 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:21,441 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:21,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:21,485 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:21,485 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:21,485 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:21,486 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:21,486 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:21,486 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:21,486 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:21,486 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2021-02-21 20:10:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:10:21,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:21,517 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] [2021-02-21 20:10:21,517 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:21,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash -504440581, now seen corresponding path program 1 times [2021-02-21 20:10:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:21,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227744194] [2021-02-21 20:10:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:21,616 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:21,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:21,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:21,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:21,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:21,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:21,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227744194] [2021-02-21 20:10:21,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:21,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:21,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451327696] [2021-02-21 20:10:21,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:21,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:21,931 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2021-02-21 20:10:22,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:22,509 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2021-02-21 20:10:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:22,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-21 20:10:22,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:22,522 INFO L225 Difference]: With dead ends: 169 [2021-02-21 20:10:22,523 INFO L226 Difference]: Without dead ends: 86 [2021-02-21 20:10:22,528 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 [2021-02-21 20:10:22,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-21 20:10:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-21 20:10:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-21 20:10:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-02-21 20:10:22,590 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 40 [2021-02-21 20:10:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:22,591 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-02-21 20:10:22,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-02-21 20:10:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-21 20:10:22,595 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:22,595 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] [2021-02-21 20:10:22,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:22,596 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash -554767181, now seen corresponding path program 1 times [2021-02-21 20:10:22,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:22,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951767325] [2021-02-21 20:10:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:22,601 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:22,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:22,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:22,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:22,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:22,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:22,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:22,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:22,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951767325] [2021-02-21 20:10:22,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:22,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:10:22,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671889677] [2021-02-21 20:10:22,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:10:22,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:22,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:10:22,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:10:22,868 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 6 states. [2021-02-21 20:10:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:23,208 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-02-21 20:10:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:10:23,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2021-02-21 20:10:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:23,213 INFO L225 Difference]: With dead ends: 120 [2021-02-21 20:10:23,213 INFO L226 Difference]: Without dead ends: 91 [2021-02-21 20:10:23,215 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 [2021-02-21 20:10:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-21 20:10:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-02-21 20:10:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-21 20:10:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-21 20:10:23,237 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 50 [2021-02-21 20:10:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:23,238 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-21 20:10:23,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:10:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-21 20:10:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:10:23,240 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:23,241 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] [2021-02-21 20:10:23,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:23,241 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash -532154925, now seen corresponding path program 1 times [2021-02-21 20:10:23,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:23,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724002782] [2021-02-21 20:10:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:23,246 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:23,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:23,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:23,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:10:23,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:23,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:23,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:23,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:23,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724002782] [2021-02-21 20:10:23,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:23,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:10:23,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490231650] [2021-02-21 20:10:23,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:10:23,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:23,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:10:23,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:10:23,493 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 6 states. [2021-02-21 20:10:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:23,797 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-02-21 20:10:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:10:23,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-21 20:10:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:23,800 INFO L225 Difference]: With dead ends: 124 [2021-02-21 20:10:23,800 INFO L226 Difference]: Without dead ends: 95 [2021-02-21 20:10:23,801 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 [2021-02-21 20:10:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-21 20:10:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2021-02-21 20:10:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-21 20:10:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-21 20:10:23,816 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 53 [2021-02-21 20:10:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:23,817 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-21 20:10:23,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:10:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-21 20:10:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:10:23,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:23,819 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] [2021-02-21 20:10:23,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:10:23,820 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash 180319763, now seen corresponding path program 1 times [2021-02-21 20:10:23,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:23,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964500302] [2021-02-21 20:10:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:23,824 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:23,860 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:23,889 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:23,935 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:23,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:23,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:10:23,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:23 BoogieIcfgContainer [2021-02-21 20:10:23,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:23,957 INFO L168 Benchmark]: Toolchain (without parser) took 3846.30 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 107.3 MB in the beginning and 84.8 MB in the end (delta: 22.5 MB). Peak memory consumption was 63.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:23,957 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:23,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.33 ms. Allocated memory is still 152.0 MB. Free memory was 106.2 MB in the beginning and 95.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:23,959 INFO L168 Benchmark]: Boogie Preprocessor took 99.47 ms. Allocated memory is still 152.0 MB. Free memory was 95.7 MB in the beginning and 93.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:23,960 INFO L168 Benchmark]: RCFGBuilder took 908.50 ms. Allocated memory is still 152.0 MB. Free memory was 93.7 MB in the beginning and 113.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:23,961 INFO L168 Benchmark]: TraceAbstraction took 2536.06 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 112.9 MB in the beginning and 84.8 MB in the end (delta: 28.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:23,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.33 ms. Allocated memory is still 152.0 MB. Free memory was 106.2 MB in the beginning and 95.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.47 ms. Allocated memory is still 152.0 MB. Free memory was 95.7 MB in the beginning and 93.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 908.50 ms. Allocated memory is still 152.0 MB. Free memory was 93.7 MB in the beginning and 113.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2536.06 ms. Allocated memory was 152.0 MB in the beginning and 191.9 MB in the end (delta: 39.8 MB). Free memory was 112.9 MB in the beginning and 84.8 MB in the end (delta: 28.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] RET, EXPR __fpclassify_double(x) [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 59 SDslu, 510 SDs, 0 SdLazy, 380 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, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...