/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_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:29,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:29,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:29,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:37:29,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:37:29,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:37:29,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:37:29,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:37:29,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:37:29,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:37:29,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:37:29,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:37:29,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:29,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:29,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:29,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:29,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:29,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:29,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:29,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:29,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:29,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:29,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:29,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:29,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 17:37:29,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 17:37:29,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 17:37:29,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 17:37:29,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 17:37:29,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 17:37:29,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 17:37:29,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 17:37:29,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 17:37:29,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 17:37:29,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 17:37:29,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 17:37:29,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 17:37:29,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 17:37:29,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:29,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:29,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:29,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:29,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:29,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:29,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:29,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:29,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:29,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:29,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:29,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:29,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:29,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:29,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:29,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:29,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:29,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:29,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:29,974 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:29,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:29,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:29,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:29,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:29,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:29,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:29,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:30,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:30,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:30,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:30,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:30,359 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:30,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-23 17:37:30,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecd534c3/0b4d58cdbee7407a91e2a831ef0df9f0/FLAGad1f7a0d6 [2021-02-23 17:37:31,066 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:31,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2021-02-23 17:37:31,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecd534c3/0b4d58cdbee7407a91e2a831ef0df9f0/FLAGad1f7a0d6 [2021-02-23 17:37:31,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aecd534c3/0b4d58cdbee7407a91e2a831ef0df9f0 [2021-02-23 17:37:31,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:31,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:31,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:31,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:31,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:31,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264c6618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31, skipping insertion in model container [2021-02-23 17:37:31,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:31,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:31,725 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_1232b.c[1958,1971] [2021-02-23 17:37:31,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:31,744 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:31,772 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_1232b.c[1958,1971] [2021-02-23 17:37:31,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:31,792 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:31,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31 WrapperNode [2021-02-23 17:37:31,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:31,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:31,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:31,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:31,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... [2021-02-23 17:37:31,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:31,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:31,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:31,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:31,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 17:37:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:37:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-23 17:37:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-23 17:37:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 17:37:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:32,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:32,489 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 17:37:32,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:32 BoogieIcfgContainer [2021-02-23 17:37:32,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:32,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:32,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:32,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:32,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:31" (1/3) ... [2021-02-23 17:37:32,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350b5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:32, skipping insertion in model container [2021-02-23 17:37:32,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:31" (2/3) ... [2021-02-23 17:37:32,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350b5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:32, skipping insertion in model container [2021-02-23 17:37:32,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:32" (3/3) ... [2021-02-23 17:37:32,503 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-02-23 17:37:32,511 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:32,515 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:32,536 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:32,569 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:32,572 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:32,572 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:32,572 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:32,573 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:32,573 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:32,573 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:32,573 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2021-02-23 17:37:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 17:37:32,626 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:32,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:32,628 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash -504440581, now seen corresponding path program 1 times [2021-02-23 17:37:32,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:32,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751049359] [2021-02-23 17:37:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:32,735 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:32,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:32,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:32,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:32,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:32,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:32,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:32,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:37:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:33,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751049359] [2021-02-23 17:37:33,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:33,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:33,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845665384] [2021-02-23 17:37:33,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:33,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:33,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:33,105 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 4 states. [2021-02-23 17:37:33,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:33,634 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2021-02-23 17:37:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:33,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2021-02-23 17:37:33,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:33,651 INFO L225 Difference]: With dead ends: 169 [2021-02-23 17:37:33,651 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 17:37:33,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 17:37:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 17:37:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 17:37:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-02-23 17:37:33,725 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 40 [2021-02-23 17:37:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:33,726 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-02-23 17:37:33,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-02-23 17:37:33,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-23 17:37:33,730 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:33,730 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] [2021-02-23 17:37:33,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:33,731 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:33,732 INFO L82 PathProgramCache]: Analyzing trace with hash -554767181, now seen corresponding path program 1 times [2021-02-23 17:37:33,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:33,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9982521] [2021-02-23 17:37:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:33,737 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:37:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:33,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:33,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:33,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:33,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:33,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9982521] [2021-02-23 17:37:33,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:33,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:37:33,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596777873] [2021-02-23 17:37:33,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:37:33,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:37:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:37:33,997 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 6 states. [2021-02-23 17:37:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:34,285 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-02-23 17:37:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:37:34,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2021-02-23 17:37:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:34,290 INFO L225 Difference]: With dead ends: 120 [2021-02-23 17:37:34,290 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 17:37:34,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:37:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 17:37:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-02-23 17:37:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 17:37:34,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-23 17:37:34,309 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 50 [2021-02-23 17:37:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:34,310 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-23 17:37:34,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:37:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-23 17:37:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:37:34,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:34,312 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] [2021-02-23 17:37:34,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:34,312 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:34,313 INFO L82 PathProgramCache]: Analyzing trace with hash -532154925, now seen corresponding path program 1 times [2021-02-23 17:37:34,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:34,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871862859] [2021-02-23 17:37:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:34,316 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:34,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:34,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:37:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:34,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:37:34,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:37:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:34,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:34,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:34,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:37:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:34,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871862859] [2021-02-23 17:37:34,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:34,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:37:34,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183463323] [2021-02-23 17:37:34,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:37:34,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:37:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:37:34,510 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 6 states. [2021-02-23 17:37:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:34,797 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2021-02-23 17:37:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:37:34,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-23 17:37:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:34,800 INFO L225 Difference]: With dead ends: 124 [2021-02-23 17:37:34,800 INFO L226 Difference]: Without dead ends: 95 [2021-02-23 17:37:34,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:37:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-23 17:37:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2021-02-23 17:37:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-02-23 17:37:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-02-23 17:37:34,815 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 53 [2021-02-23 17:37:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:34,815 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-02-23 17:37:34,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:37:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-02-23 17:37:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:37:34,817 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:34,818 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] [2021-02-23 17:37:34,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:37:34,818 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash 180319763, now seen corresponding path program 1 times [2021-02-23 17:37:34,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:34,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229574178] [2021-02-23 17:37:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:34,822 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:34,850 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:34,870 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:34,910 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:34,910 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:34,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:37:34,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:34 BoogieIcfgContainer [2021-02-23 17:37:34,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:34,931 INFO L168 Benchmark]: Toolchain (without parser) took 3469.60 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 130.1 MB in the beginning and 157.6 MB in the end (delta: -27.5 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:34,932 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 126.4 MB in the end (delta: 214.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:34,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.74 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 118.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:34,934 INFO L168 Benchmark]: Boogie Preprocessor took 86.59 ms. Allocated memory is still 153.1 MB. Free memory was 118.5 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:34,934 INFO L168 Benchmark]: RCFGBuilder took 607.45 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 128.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:34,935 INFO L168 Benchmark]: TraceAbstraction took 2433.44 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 128.5 MB in the beginning and 157.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:34,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory was 126.7 MB in the beginning and 126.4 MB in the end (delta: 214.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.74 ms. Allocated memory is still 153.1 MB. Free memory was 129.0 MB in the beginning and 118.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.59 ms. Allocated memory is still 153.1 MB. Free memory was 118.5 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 607.45 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 128.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2433.44 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 128.5 MB in the beginning and 157.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 4.4 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 76. 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, 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, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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...