/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-36cd7be [2021-02-23 17:38:15,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:15,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:15,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:38:15,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:15,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:15,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:15,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:15,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:15,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:15,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:15,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:15,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:15,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:15,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:15,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:15,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:38:15,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:15,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:15,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:15,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:15,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:15,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:15,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:15,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:15,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:15,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:15,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:15,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:15,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:15,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:15,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:15,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:15,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:15,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:15,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:15,154 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:15,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:15,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:15,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:15,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:15,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:15,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:15,155 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:15,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:15,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:15,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:15,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:15,595 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:15,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2021-02-23 17:38:15,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c149e56c/4c82bdd9abb6494a9a9d4af60735861a/FLAG5cab0262a [2021-02-23 17:38:16,202 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:16,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2021-02-23 17:38:16,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c149e56c/4c82bdd9abb6494a9a9d4af60735861a/FLAG5cab0262a [2021-02-23 17:38:16,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c149e56c/4c82bdd9abb6494a9a9d4af60735861a [2021-02-23 17:38:16,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:16,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:16,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:16,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:16,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:16,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b4c8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16, skipping insertion in model container [2021-02-23 17:38:16,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:16,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:16,828 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] [2021-02-23 17:38:16,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:16,843 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:16,869 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] [2021-02-23 17:38:16,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:16,888 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:16,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16 WrapperNode [2021-02-23 17:38:16,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:16,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:16,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:16,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:16,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (1/1) ... [2021-02-23 17:38:16,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:16,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:16,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:16,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:16,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (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 [2021-02-23 17:38:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:17,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-23 17:38:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2021-02-23 17:38:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 17:38:17,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:38:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:38:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:17,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:17,565 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 17:38:17,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:17 BoogieIcfgContainer [2021-02-23 17:38:17,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:17,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:17,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:17,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:17,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:16" (1/3) ... [2021-02-23 17:38:17,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a66e828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:17, skipping insertion in model container [2021-02-23 17:38:17,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:16" (2/3) ... [2021-02-23 17:38:17,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a66e828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:17, skipping insertion in model container [2021-02-23 17:38:17,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:17" (3/3) ... [2021-02-23 17:38:17,576 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2021-02-23 17:38:17,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:17,588 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:17,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:17,632 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:17,633 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:17,633 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:17,633 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:17,633 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:17,633 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:17,633 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:17,634 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-02-23 17:38:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 17:38:17,661 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:17,662 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] [2021-02-23 17:38:17,662 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:17,669 INFO L82 PathProgramCache]: Analyzing trace with hash 56598068, now seen corresponding path program 1 times [2021-02-23 17:38:17,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:17,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131184739] [2021-02-23 17:38:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:17,755 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:17,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:17,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:17,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:17,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:17,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:17,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:17,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:38:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:38:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:18,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131184739] [2021-02-23 17:38:18,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:18,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:38:18,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89392356] [2021-02-23 17:38:18,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:38:18,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:18,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:38:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:38:18,124 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2021-02-23 17:38:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:18,555 INFO L93 Difference]: Finished difference Result 161 states and 189 transitions. [2021-02-23 17:38:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:38:18,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-23 17:38:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:18,568 INFO L225 Difference]: With dead ends: 161 [2021-02-23 17:38:18,568 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 17:38:18,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:38:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 17:38:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-23 17:38:18,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 17:38:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-23 17:38:18,630 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 39 [2021-02-23 17:38:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:18,631 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-23 17:38:18,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:38:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-23 17:38:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 17:38:18,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:18,635 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] [2021-02-23 17:38:18,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:18,635 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:18,636 INFO L82 PathProgramCache]: Analyzing trace with hash -127481842, now seen corresponding path program 1 times [2021-02-23 17:38:18,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:18,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229386337] [2021-02-23 17:38:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:18,641 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:38:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:18,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:38:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:18,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:18,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:18,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:18,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229386337] [2021-02-23 17:38:18,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:18,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:38:18,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648096437] [2021-02-23 17:38:18,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:38:18,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:18,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:38:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:38:18,979 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-23 17:38:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:19,348 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-02-23 17:38:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:38:19,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 17:38:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:19,353 INFO L225 Difference]: With dead ends: 116 [2021-02-23 17:38:19,354 INFO L226 Difference]: Without dead ends: 87 [2021-02-23 17:38:19,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:38:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-23 17:38:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-02-23 17:38:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 17:38:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 17:38:19,375 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 46 [2021-02-23 17:38:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:19,375 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 17:38:19,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:38:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 17:38:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 17:38:19,378 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:19,378 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] [2021-02-23 17:38:19,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:19,378 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:19,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1581675528, now seen corresponding path program 1 times [2021-02-23 17:38:19,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:19,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924712435] [2021-02-23 17:38:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:19,383 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:19,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:19,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:38:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:19,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:38:19,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:38:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:19,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:19,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:19,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:38:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:38:19,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924712435] [2021-02-23 17:38:19,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:19,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:38:19,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588970228] [2021-02-23 17:38:19,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:38:19,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:38:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:38:19,621 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-02-23 17:38:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:19,945 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-02-23 17:38:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:38:19,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-23 17:38:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:19,948 INFO L225 Difference]: With dead ends: 120 [2021-02-23 17:38:19,948 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 17:38:19,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:38:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 17:38:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-02-23 17:38:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 17:38:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 17:38:19,963 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 49 [2021-02-23 17:38:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:19,963 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 17:38:19,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:38:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 17:38:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 17:38:19,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:19,965 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] [2021-02-23 17:38:19,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:38:19,966 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash -869200840, now seen corresponding path program 1 times [2021-02-23 17:38:19,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:19,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715445927] [2021-02-23 17:38:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:19,969 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:19,989 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:20,006 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:20,034 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:38:20,034 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:38:20,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:38:20,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:20 BoogieIcfgContainer [2021-02-23 17:38:20,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:20,055 INFO L168 Benchmark]: Toolchain (without parser) took 3476.52 ms. Allocated memory was 157.3 MB in the beginning and 211.8 MB in the end (delta: 54.5 MB). Free memory was 133.2 MB in the beginning and 90.8 MB in the end (delta: 42.4 MB). Peak memory consumption was 97.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:20,055 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:20,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 121.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:20,057 INFO L168 Benchmark]: Boogie Preprocessor took 46.31 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 120.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:20,058 INFO L168 Benchmark]: RCFGBuilder took 630.60 ms. Allocated memory is still 157.3 MB. Free memory was 120.0 MB in the beginning and 131.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:20,059 INFO L168 Benchmark]: TraceAbstraction took 2484.24 ms. Allocated memory was 157.3 MB in the beginning and 211.8 MB in the end (delta: 54.5 MB). Free memory was 130.7 MB in the beginning and 90.8 MB in the end (delta: 40.0 MB). Peak memory consumption was 95.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:20,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 121.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.31 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 120.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.60 ms. Allocated memory is still 157.3 MB. Free memory was 120.0 MB in the beginning and 131.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2484.24 ms. Allocated memory was 157.3 MB in the beginning and 211.8 MB in the end (delta: 54.5 MB). Free memory was 130.7 MB in the beginning and 90.8 MB in the end (delta: 40.0 MB). Peak memory consumption was 95.6 MB. 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: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, 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, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: 0.0s 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...