/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/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:55,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:55,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:55,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:55,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:55,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:55,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:55,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:55,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:55,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:55,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:55,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:55,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:55,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:55,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:55,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:55,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:55,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:55,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:55,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:55,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:55,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:55,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:55,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:55,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:55,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:55,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:55,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:55,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:55,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:55,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:55,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:55,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:55,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:55,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:55,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:55,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:55,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:55,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:55,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:55,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:55,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:55,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:55,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:55,964 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:55,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:55,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:55,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:55,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:55,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:55,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:55,965 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:56,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:56,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:56,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:56,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:56,418 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:56,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2021-02-21 20:10:56,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d7802a/653b7c71c2ac43078b0a1c6398c819c0/FLAGaa7b35b35 [2021-02-21 20:10:57,071 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:57,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2021-02-21 20:10:57,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d7802a/653b7c71c2ac43078b0a1c6398c819c0/FLAGaa7b35b35 [2021-02-21 20:10:57,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055d7802a/653b7c71c2ac43078b0a1c6398c819c0 [2021-02-21 20:10:57,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:57,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:57,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:57,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:57,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:57,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2490571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57, skipping insertion in model container [2021-02-21 20:10:57,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:57,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:57,668 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_1252a.c[1897,1910] [2021-02-21 20:10:57,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:57,681 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:57,707 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_1252a.c[1897,1910] [2021-02-21 20:10:57,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:57,729 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:57,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57 WrapperNode [2021-02-21 20:10:57,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:57,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:57,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:57,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:57,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... [2021-02-21 20:10:57,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:57,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:57,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:57,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:57,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:57,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-21 20:10:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2021-02-21 20:10:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-21 20:10:57,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:57,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:57,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:57,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-21 20:10:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:57,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2021-02-21 20:10:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-21 20:10:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:58,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:58,413 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 20:10:58,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:58 BoogieIcfgContainer [2021-02-21 20:10:58,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:58,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:58,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:58,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:58,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:57" (1/3) ... [2021-02-21 20:10:58,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ada6fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:58, skipping insertion in model container [2021-02-21 20:10:58,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:57" (2/3) ... [2021-02-21 20:10:58,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ada6fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:58, skipping insertion in model container [2021-02-21 20:10:58,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:58" (3/3) ... [2021-02-21 20:10:58,425 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2021-02-21 20:10:58,432 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:58,437 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:58,458 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:58,485 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:58,485 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:58,485 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:58,485 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:58,486 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:58,486 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:58,486 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:58,486 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-02-21 20:10:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:10:58,518 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:58,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:58,520 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:58,527 INFO L82 PathProgramCache]: Analyzing trace with hash 56598068, now seen corresponding path program 1 times [2021-02-21 20:10:58,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:58,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154384719] [2021-02-21 20:10:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:58,643 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:58,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:58,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:58,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:58,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:59,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154384719] [2021-02-21 20:10:59,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:59,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:59,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969196292] [2021-02-21 20:10:59,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:59,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:59,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:59,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:59,239 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2021-02-21 20:10:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:59,541 INFO L93 Difference]: Finished difference Result 161 states and 189 transitions. [2021-02-21 20:10:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:59,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-21 20:10:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:59,562 INFO L225 Difference]: With dead ends: 161 [2021-02-21 20:10:59,562 INFO L226 Difference]: Without dead ends: 82 [2021-02-21 20:10:59,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:59,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-21 20:10:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-21 20:10:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-21 20:10:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-21 20:10:59,665 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 39 [2021-02-21 20:10:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:59,667 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-21 20:10:59,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-21 20:10:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:10:59,672 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:59,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:59,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:59,673 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash -127481842, now seen corresponding path program 1 times [2021-02-21 20:10:59,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:59,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828122263] [2021-02-21 20:10:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:59,683 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:10:59,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:10:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:59,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:59,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:59,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:11:00,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828122263] [2021-02-21 20:11:00,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:00,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:11:00,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736447073] [2021-02-21 20:11:00,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:11:00,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:00,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:11:00,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:11:00,015 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-21 20:11:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:00,330 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-02-21 20:11:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:11:00,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-21 20:11:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:00,334 INFO L225 Difference]: With dead ends: 116 [2021-02-21 20:11:00,334 INFO L226 Difference]: Without dead ends: 87 [2021-02-21 20:11:00,336 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 [2021-02-21 20:11:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-21 20:11:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-02-21 20:11:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-21 20:11:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-21 20:11:00,353 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 46 [2021-02-21 20:11:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:00,354 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-21 20:11:00,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:11:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-21 20:11:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-21 20:11:00,356 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:00,356 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] [2021-02-21 20:11:00,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:11:00,357 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1581675528, now seen corresponding path program 1 times [2021-02-21 20:11:00,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:00,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179522024] [2021-02-21 20:11:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:00,362 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:00,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:00,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:11:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:00,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:11:00,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:11:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:00,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:00,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:00,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:11:00,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179522024] [2021-02-21 20:11:00,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:00,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:11:00,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68197456] [2021-02-21 20:11:00,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:11:00,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:00,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:11:00,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:11:00,547 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-02-21 20:11:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:00,770 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-02-21 20:11:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:11:00,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-21 20:11:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:00,773 INFO L225 Difference]: With dead ends: 120 [2021-02-21 20:11:00,773 INFO L226 Difference]: Without dead ends: 91 [2021-02-21 20:11:00,774 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 [2021-02-21 20:11:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-21 20:11:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-02-21 20:11:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-21 20:11:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-21 20:11:00,788 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 49 [2021-02-21 20:11:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:00,788 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-21 20:11:00,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:11:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-21 20:11:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-21 20:11:00,793 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:00,793 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] [2021-02-21 20:11:00,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:11:00,794 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -869200840, now seen corresponding path program 1 times [2021-02-21 20:11:00,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:00,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811640390] [2021-02-21 20:11:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:00,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:11:00,831 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:11:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:11:00,849 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:11:00,880 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:11:00,880 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:11:00,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:11:00,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:11:00 BoogieIcfgContainer [2021-02-21 20:11:00,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:11:00,902 INFO L168 Benchmark]: Toolchain (without parser) took 3453.05 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 127.4 MB in the beginning and 170.9 MB in the end (delta: -43.5 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:00,903 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 435.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:11:00,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:00,904 INFO L168 Benchmark]: Boogie Preprocessor took 45.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:00,905 INFO L168 Benchmark]: RCFGBuilder took 638.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 91.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:00,906 INFO L168 Benchmark]: TraceAbstraction took 2483.15 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 90.8 MB in the beginning and 170.9 MB in the end (delta: -80.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:11:00,909 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 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 435.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 638.52 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 91.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2483.15 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 90.8 MB in the beginning and 170.9 MB in the end (delta: -80.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: 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 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L77] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 270 SDtfs, 53 SDslu, 492 SDs, 0 SdLazy, 364 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 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...