/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:32:11,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:32:11,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:32:11,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:32:11,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:32:11,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:32:11,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:32:11,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:32:11,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:32:11,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:32:11,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:32:11,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:32:11,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:32:11,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:32:11,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:32:11,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:32:11,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:32:11,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:32:11,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:32:11,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:32:11,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:32:11,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:32:11,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:32:11,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:32:11,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:32:11,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:32:11,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:32:11,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:32:11,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:32:11,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:32:11,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:32:11,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:32:11,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:32:11,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:32:11,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:32:11,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:32:11,604 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:32:11,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:32:11,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:32:11,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:32:11,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:32:11,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:32:11,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:32:11,606 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:32:11,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:32:12,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:32:12,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:32:12,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:32:12,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:32:12,062 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:32:12,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-22 01:32:12,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74dd8ee6/ed1e53d195104d4ea90ab4ae3e2d9ff5/FLAG92abbd5ec [2021-02-22 01:32:12,753 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:32:12,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-22 01:32:12,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74dd8ee6/ed1e53d195104d4ea90ab4ae3e2d9ff5/FLAG92abbd5ec [2021-02-22 01:32:13,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74dd8ee6/ed1e53d195104d4ea90ab4ae3e2d9ff5 [2021-02-22 01:32:13,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:32:13,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:32:13,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:13,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:32:13,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:32:13,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b33301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13, skipping insertion in model container [2021-02-22 01:32:13,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:32:13,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:32:13,445 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_1230.c[1411,1424] [2021-02-22 01:32:13,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:13,458 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:32:13,481 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_1230.c[1411,1424] [2021-02-22 01:32:13,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:13,499 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:32:13,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13 WrapperNode [2021-02-22 01:32:13,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:13,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:32:13,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:32:13,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:32:13,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (1/1) ... [2021-02-22 01:32:13,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:32:13,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:32:13,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:32:13,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:32:13,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (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 [2021-02-22 01:32:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:32:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:32:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:32:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-22 01:32:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2021-02-22 01:32:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-22 01:32:13,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:32:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:32:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:32:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:32:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:32:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-22 01:32:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:32:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:32:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:32:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:32:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:32:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:32:14,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:32:14,068 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 01:32:14,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:14 BoogieIcfgContainer [2021-02-22 01:32:14,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:32:14,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:32:14,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:32:14,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:32:14,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:13" (1/3) ... [2021-02-22 01:32:14,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e687fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:14, skipping insertion in model container [2021-02-22 01:32:14,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:13" (2/3) ... [2021-02-22 01:32:14,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e687fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:14, skipping insertion in model container [2021-02-22 01:32:14,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:14" (3/3) ... [2021-02-22 01:32:14,080 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-02-22 01:32:14,088 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:32:14,092 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:32:14,112 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:32:14,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:32:14,140 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:32:14,140 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:32:14,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:32:14,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:32:14,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:32:14,141 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:32:14,141 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:32:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-02-22 01:32:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 01:32:14,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:14,174 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] [2021-02-22 01:32:14,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:14,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1947623061, now seen corresponding path program 1 times [2021-02-22 01:32:14,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:14,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999746606] [2021-02-22 01:32:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:14,283 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:32:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:32:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-22 01:32:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:14,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:14,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:14,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999746606] [2021-02-22 01:32:14,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:14,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:32:14,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050571037] [2021-02-22 01:32:14,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:32:14,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:32:14,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:32:14,719 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-02-22 01:32:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:14,980 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2021-02-22 01:32:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:32:14,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2021-02-22 01:32:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:14,993 INFO L225 Difference]: With dead ends: 133 [2021-02-22 01:32:14,993 INFO L226 Difference]: Without dead ends: 69 [2021-02-22 01:32:14,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-22 01:32:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-02-22 01:32:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-22 01:32:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2021-02-22 01:32:15,061 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 42 [2021-02-22 01:32:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:15,062 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2021-02-22 01:32:15,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:32:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2021-02-22 01:32:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-22 01:32:15,065 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:15,066 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] [2021-02-22 01:32:15,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:32:15,067 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash -520908132, now seen corresponding path program 1 times [2021-02-22 01:32:15,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:15,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252240809] [2021-02-22 01:32:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:15,075 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:32:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:15,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:32:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-22 01:32:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:15,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252240809] [2021-02-22 01:32:15,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:15,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:32:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522301314] [2021-02-22 01:32:15,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:32:15,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:32:15,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:32:15,368 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 6 states. [2021-02-22 01:32:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:15,683 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-02-22 01:32:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:32:15,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-22 01:32:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:15,695 INFO L225 Difference]: With dead ends: 90 [2021-02-22 01:32:15,695 INFO L226 Difference]: Without dead ends: 74 [2021-02-22 01:32:15,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-22 01:32:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-02-22 01:32:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 01:32:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-22 01:32:15,743 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 49 [2021-02-22 01:32:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:15,744 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-22 01:32:15,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:32:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-22 01:32:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-22 01:32:15,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:15,750 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] [2021-02-22 01:32:15,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:32:15,750 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1499881465, now seen corresponding path program 1 times [2021-02-22 01:32:15,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:15,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747953820] [2021-02-22 01:32:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:15,760 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:32:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:15,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:32:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-22 01:32:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:15,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:15,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747953820] [2021-02-22 01:32:15,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:15,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:32:15,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695053590] [2021-02-22 01:32:15,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:32:15,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:32:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:32:15,982 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2021-02-22 01:32:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:16,204 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-02-22 01:32:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:32:16,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-02-22 01:32:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:16,207 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:32:16,207 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 01:32:16,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:16,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 01:32:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-02-22 01:32:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 01:32:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-22 01:32:16,231 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 52 [2021-02-22 01:32:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:16,231 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-22 01:32:16,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:32:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-22 01:32:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-22 01:32:16,233 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:16,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-02-22 01:32:16,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:32:16,234 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:16,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1894828089, now seen corresponding path program 1 times [2021-02-22 01:32:16,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:16,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13868047] [2021-02-22 01:32:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:16,238 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:32:16,263 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:32:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:32:16,285 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:32:16,319 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:32:16,320 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:32:16,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:32:16,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:32:16 BoogieIcfgContainer [2021-02-22 01:32:16,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:32:16,342 INFO L168 Benchmark]: Toolchain (without parser) took 3216.35 ms. Allocated memory was 165.7 MB in the beginning and 227.5 MB in the end (delta: 61.9 MB). Free memory was 140.6 MB in the beginning and 91.5 MB in the end (delta: 49.1 MB). Peak memory consumption was 111.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:16,342 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 165.7 MB. Free memory was 138.4 MB in the beginning and 138.3 MB in the end (delta: 82.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:32:16,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.67 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 129.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:16,344 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 165.7 MB. Free memory was 129.3 MB in the beginning and 127.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:16,345 INFO L168 Benchmark]: RCFGBuilder took 530.37 ms. Allocated memory is still 165.7 MB. Free memory was 127.5 MB in the beginning and 141.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:16,345 INFO L168 Benchmark]: TraceAbstraction took 2267.00 ms. Allocated memory was 165.7 MB in the beginning and 227.5 MB in the end (delta: 61.9 MB). Free memory was 141.0 MB in the beginning and 91.5 MB in the end (delta: 49.5 MB). Peak memory consumption was 112.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:16,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 165.7 MB. Free memory was 138.4 MB in the beginning and 138.3 MB in the end (delta: 82.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.67 ms. Allocated memory is still 165.7 MB. Free memory was 139.4 MB in the beginning and 129.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 165.7 MB. Free memory was 129.3 MB in the beginning and 127.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 530.37 ms. Allocated memory is still 165.7 MB. Free memory was 127.5 MB in the beginning and 141.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2267.00 ms. Allocated memory was 165.7 MB in the beginning and 227.5 MB in the end (delta: 61.9 MB). Free memory was 141.0 MB in the beginning and 91.5 MB in the end (delta: 49.5 MB). Peak memory consumption was 112.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: 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 46, overapproximation of someBinaryArithmeticFLOAToperation at line 57. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L58] CALL, EXPR fmin_float(x, y) [L37] CALL, EXPR __fpclassify_float(x) [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] RET, EXPR __fpclassify_float(x) [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] RET, EXPR fmin_float(x, y) [L58] float res = fmin_float(x, y); [L60] CALL, EXPR isnan_float(res) [L46] return x != x; [L60] RET, EXPR isnan_float(res) [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 59 SDslu, 396 SDs, 0 SdLazy, 309 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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: 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...