/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:14,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:14,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:14,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:56:14,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:14,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:14,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:14,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:14,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:14,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:14,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:14,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:14,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:14,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:14,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:14,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:14,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:14,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:14,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:14,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:14,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:56:14,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:14,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:14,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:14,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:14,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:14,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:14,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:14,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:14,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:14,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:14,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:14,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:14,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:14,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:14,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:14,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:14,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:14,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:14,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:14,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:14,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:14,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:14,837 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:14,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:15,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:15,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:15,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:15,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:15,237 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:15,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-24 03:56:15,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a31308e1/11920b2300fd47109d246708069f5817/FLAG0b7264b01 [2021-02-24 03:56:15,945 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:15,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2021-02-24 03:56:15,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a31308e1/11920b2300fd47109d246708069f5817/FLAG0b7264b01 [2021-02-24 03:56:16,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a31308e1/11920b2300fd47109d246708069f5817 [2021-02-24 03:56:16,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:16,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:16,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:16,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:16,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:16,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e4da37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16, skipping insertion in model container [2021-02-24 03:56:16,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:16,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:16,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c[1411,1424] [2021-02-24 03:56:16,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:16,572 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:16,598 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c[1411,1424] [2021-02-24 03:56:16,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:16,615 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:16,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16 WrapperNode [2021-02-24 03:56:16,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:16,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:16,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:16,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:16,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (1/1) ... [2021-02-24 03:56:16,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:16,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:16,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:16,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:16,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (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 [2021-02-24 03:56:16,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-24 03:56:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2021-02-24 03:56:16,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-24 03:56:16,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:16,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2021-02-24 03:56:16,764 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-24 03:56:16,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:16,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:16,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:16,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:16,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:56:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:17,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:17,298 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 03:56:17,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:17 BoogieIcfgContainer [2021-02-24 03:56:17,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:17,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:17,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:17,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:17,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:16" (1/3) ... [2021-02-24 03:56:17,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acae3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:17, skipping insertion in model container [2021-02-24 03:56:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:16" (2/3) ... [2021-02-24 03:56:17,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acae3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:17, skipping insertion in model container [2021-02-24 03:56:17,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:17" (3/3) ... [2021-02-24 03:56:17,315 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2021-02-24 03:56:17,323 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:17,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:17,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:17,390 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:17,390 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:17,390 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:17,391 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:17,391 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:17,391 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:17,391 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:17,391 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-02-24 03:56:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 03:56:17,430 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:17,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:56:17,432 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1947623061, now seen corresponding path program 1 times [2021-02-24 03:56:17,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:17,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711701007] [2021-02-24 03:56:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:17,541 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:17,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:17,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:56:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:17,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:56:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:17,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:17,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-24 03:56:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:18,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711701007] [2021-02-24 03:56:18,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:18,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:56:18,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313435677] [2021-02-24 03:56:18,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:56:18,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:18,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:56:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:56:18,037 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-02-24 03:56:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:18,444 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2021-02-24 03:56:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:56:18,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2021-02-24 03:56:18,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:18,456 INFO L225 Difference]: With dead ends: 133 [2021-02-24 03:56:18,456 INFO L226 Difference]: Without dead ends: 69 [2021-02-24 03:56:18,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-24 03:56:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-02-24 03:56:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-24 03:56:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2021-02-24 03:56:18,520 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 42 [2021-02-24 03:56:18,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:18,520 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2021-02-24 03:56:18,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:56:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2021-02-24 03:56:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 03:56:18,524 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:18,524 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] [2021-02-24 03:56:18,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:18,525 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash -520908132, now seen corresponding path program 1 times [2021-02-24 03:56:18,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:18,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114036489] [2021-02-24 03:56:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:18,529 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:56:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:18,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:56:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-02-24 03:56:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:18,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:18,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:18,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114036489] [2021-02-24 03:56:18,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:18,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:56:18,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416333111] [2021-02-24 03:56:18,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:56:18,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:18,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:56:18,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:56:18,923 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 6 states. [2021-02-24 03:56:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:19,270 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-02-24 03:56:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:19,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-24 03:56:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:19,276 INFO L225 Difference]: With dead ends: 90 [2021-02-24 03:56:19,276 INFO L226 Difference]: Without dead ends: 74 [2021-02-24 03:56:19,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-02-24 03:56:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-02-24 03:56:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 03:56:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-24 03:56:19,297 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 49 [2021-02-24 03:56:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:19,298 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-24 03:56:19,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:56:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-24 03:56:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 03:56:19,300 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:19,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:56:19,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:19,301 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1499881465, now seen corresponding path program 1 times [2021-02-24 03:56:19,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:19,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452204635] [2021-02-24 03:56:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:19,305 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:19,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:19,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:56:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:19,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:56:19,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:56:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:19,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:19,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-02-24 03:56:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:19,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:19,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:19,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452204635] [2021-02-24 03:56:19,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:19,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:56:19,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483098682] [2021-02-24 03:56:19,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:56:19,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:19,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:56:19,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:56:19,528 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 6 states. [2021-02-24 03:56:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:19,814 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-02-24 03:56:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:19,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-02-24 03:56:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:19,817 INFO L225 Difference]: With dead ends: 94 [2021-02-24 03:56:19,817 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 03:56:19,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 03:56:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-02-24 03:56:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 03:56:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2021-02-24 03:56:19,833 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 52 [2021-02-24 03:56:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:19,833 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2021-02-24 03:56:19,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:56:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2021-02-24 03:56:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 03:56:19,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:19,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:56:19,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:56:19,836 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:19,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1894828089, now seen corresponding path program 1 times [2021-02-24 03:56:19,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:19,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452775428] [2021-02-24 03:56:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:19,839 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:19,868 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:19,888 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:19,918 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:56:19,919 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:56:19,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:56:19,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:56:19 BoogieIcfgContainer [2021-02-24 03:56:19,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:56:19,939 INFO L168 Benchmark]: Toolchain (without parser) took 3596.49 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 127.0 MB in the beginning and 71.9 MB in the end (delta: 55.1 MB). Peak memory consumption was 99.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:19,940 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 95.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:19,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:19,942 INFO L168 Benchmark]: Boogie Preprocessor took 42.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:19,943 INFO L168 Benchmark]: RCFGBuilder took 640.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 131.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:19,943 INFO L168 Benchmark]: TraceAbstraction took 2631.88 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 131.3 MB in the beginning and 71.9 MB in the end (delta: 59.4 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:19,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.8 MB in the beginning and 122.7 MB in the end (delta: 95.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.36 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 640.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 131.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2631.88 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 131.3 MB in the beginning and 71.9 MB in the end (delta: 59.4 MB). Peak memory consumption was 102.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 57. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L58] CALL, EXPR fmin_float(x, y) [L37] CALL, EXPR __fpclassify_float(x) [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] RET, EXPR __fpclassify_float(x) [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] RET, EXPR fmin_float(x, y) [L58] float res = fmin_float(x, y); [L60] CALL, EXPR isnan_float(res) [L46] return x != x; [L60] RET, EXPR isnan_float(res) [L60] COND TRUE !isnan_float(res) [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 59 SDslu, 396 SDs, 0 SdLazy, 309 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s 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...