/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:23,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:23,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:23,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:23,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:23,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:23,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:23,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:23,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:23,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:23,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:23,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:23,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:23,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:23,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:23,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:23,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:23,297 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 22:36:23,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:23,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:23,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:23,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:23,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:23,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:23,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:23,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:23,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:23,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:23,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:23,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:23,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:23,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:23,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:23,325 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:23,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:23,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:23,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:23,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:23,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:23,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:23,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:23,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:23,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:23,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:23,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:23,750 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:23,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2021-02-23 22:36:23,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf58474/cefae3d99d7848559df8ce768cf84f59/FLAG6c630393a [2021-02-23 22:36:24,522 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:24,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232b.c [2021-02-23 22:36:24,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf58474/cefae3d99d7848559df8ce768cf84f59/FLAG6c630393a [2021-02-23 22:36:24,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2caf58474/cefae3d99d7848559df8ce768cf84f59 [2021-02-23 22:36:24,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:24,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:24,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:24,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:24,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:24,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:24,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe7845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24, skipping insertion in model container [2021-02-23 22:36:24,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:24,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:24,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:24,892 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_1232b.c[1657,1670] [2021-02-23 22:36:24,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:24,910 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:24,959 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_1232b.c[1657,1670] [2021-02-23 22:36:24,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:24,982 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:24,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24 WrapperNode [2021-02-23 22:36:24,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:24,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:24,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:24,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:25,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (1/1) ... [2021-02-23 22:36:25,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:25,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:25,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:25,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:25,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (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 22:36:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:25,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-02-23 22:36:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2021-02-23 22:36:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 22:36:25,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:36:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-02-23 22:36:25,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:25,243 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2021-02-23 22:36:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 22:36:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:25,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:25,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:25,674 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 22:36:25,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:25 BoogieIcfgContainer [2021-02-23 22:36:25,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:25,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:25,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:25,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:25,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:24" (1/3) ... [2021-02-23 22:36:25,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c111a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:25, skipping insertion in model container [2021-02-23 22:36:25,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:24" (2/3) ... [2021-02-23 22:36:25,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614c111a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:25, skipping insertion in model container [2021-02-23 22:36:25,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:25" (3/3) ... [2021-02-23 22:36:25,686 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2021-02-23 22:36:25,693 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:25,698 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:25,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:25,743 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:25,743 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:25,743 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:25,743 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:25,744 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:25,744 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:25,744 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:25,744 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2021-02-23 22:36:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 22:36:25,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:25,807 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 22:36:25,807 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 515290282, now seen corresponding path program 1 times [2021-02-23 22:36:25,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:25,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956520899] [2021-02-23 22:36:25,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,232 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 22:36:26,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956520899] [2021-02-23 22:36:26,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:26,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447599211] [2021-02-23 22:36:26,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:26,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:26,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:26,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:26,259 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2021-02-23 22:36:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:26,600 INFO L93 Difference]: Finished difference Result 161 states and 189 transitions. [2021-02-23 22:36:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:26,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-23 22:36:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:26,616 INFO L225 Difference]: With dead ends: 161 [2021-02-23 22:36:26,616 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:36:26,622 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 22:36:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:36:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-02-23 22:36:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 22:36:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-02-23 22:36:26,714 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 39 [2021-02-23 22:36:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:26,716 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-02-23 22:36:26,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-02-23 22:36:26,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 22:36:26,722 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:26,722 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 22:36:26,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:26,723 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:26,725 INFO L82 PathProgramCache]: Analyzing trace with hash -97548509, now seen corresponding path program 1 times [2021-02-23 22:36:26,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:26,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993509233] [2021-02-23 22:36:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:26,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:26,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:27,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:27,086 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 22:36:27,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993509233] [2021-02-23 22:36:27,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:27,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:27,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406946401] [2021-02-23 22:36:27,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:27,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:27,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:27,090 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 6 states. [2021-02-23 22:36:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:27,407 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-02-23 22:36:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:27,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 22:36:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:27,418 INFO L225 Difference]: With dead ends: 116 [2021-02-23 22:36:27,418 INFO L226 Difference]: Without dead ends: 87 [2021-02-23 22:36:27,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 22:36:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-23 22:36:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-02-23 22:36:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:36:27,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 22:36:27,439 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 46 [2021-02-23 22:36:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:27,439 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 22:36:27,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 22:36:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:36:27,441 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:27,442 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 22:36:27,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:27,442 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:27,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:27,443 INFO L82 PathProgramCache]: Analyzing trace with hash 668113358, now seen corresponding path program 1 times [2021-02-23 22:36:27,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:27,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284078607] [2021-02-23 22:36:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:36:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 22:36:27,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:36:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:27,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:27,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:27,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:36:27,681 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 22:36:27,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284078607] [2021-02-23 22:36:27,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:27,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:36:27,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753720817] [2021-02-23 22:36:27,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:36:27,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:27,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:36:27,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:36:27,686 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 6 states. [2021-02-23 22:36:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:27,952 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-02-23 22:36:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 22:36:27,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2021-02-23 22:36:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:27,955 INFO L225 Difference]: With dead ends: 120 [2021-02-23 22:36:27,955 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 22:36:27,956 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 22:36:27,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 22:36:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-02-23 22:36:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 22:36:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-02-23 22:36:27,969 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 49 [2021-02-23 22:36:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:27,970 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-02-23 22:36:27,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:36:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-02-23 22:36:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 22:36:27,972 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:27,972 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 22:36:27,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:36:27,972 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1380588046, now seen corresponding path program 1 times [2021-02-23 22:36:27,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:27,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728536606] [2021-02-23 22:36:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:27,998 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:28,020 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:28,066 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:28,067 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:28,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:36:28,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:28 BoogieIcfgContainer [2021-02-23 22:36:28,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:28,144 INFO L168 Benchmark]: Toolchain (without parser) took 3576.71 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 107.7 MB in the beginning and 104.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:28,145 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:28,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.25 ms. Allocated memory is still 151.0 MB. Free memory was 106.5 MB in the beginning and 96.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:28,146 INFO L168 Benchmark]: Boogie Preprocessor took 98.01 ms. Allocated memory is still 151.0 MB. Free memory was 96.3 MB in the beginning and 133.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:28,147 INFO L168 Benchmark]: RCFGBuilder took 588.72 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 112.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:28,148 INFO L168 Benchmark]: TraceAbstraction took 2464.12 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 112.2 MB in the beginning and 104.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:28,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 399.25 ms. Allocated memory is still 151.0 MB. Free memory was 106.5 MB in the beginning and 96.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.01 ms. Allocated memory is still 151.0 MB. Free memory was 96.3 MB in the beginning and 133.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.72 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 112.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2464.12 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 112.2 MB in the beginning and 104.8 MB in the end (delta: 7.4 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: 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 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; VAL [y=0] [L68] CALL, EXPR fmin_float(x, y) VAL [\old(x)=4286578695, \old(y)=0] [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578695] [L15] __uint32_t w; VAL [\old(x)=4286578695, x=4286578695] [L18] ieee_float_shape_type gf_u; VAL [\old(x)=4286578695, gf_u={3:0}, x=4286578695] [L19] gf_u.value = (x) VAL [\old(x)=4286578695, gf_u={3:0}, x=4286578695] [L20] EXPR gf_u.word VAL [\old(x)=4286578695, gf_u={3:0}, gf_u.word=4286578689, x=4286578695] [L20] (w) = gf_u.word VAL [\old(x)=4286578695, gf_u={3:0}, gf_u.word=4286578689, w=4286578689, x=4286578695] [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578695, w=4286578689, x=4286578695] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578695, w=4286578689, x=4286578695] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578695, w=4286578689, x=4286578695] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=4286578695, w=4286578689, x=4286578695] [L34] return 0; VAL [\old(x)=4286578695, \result=0, w=4286578689, x=4286578695] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578695, \old(y)=0, __fpclassify_float(x)=0, x=4286578695, y=0] [L38] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=4286578695, \old(y)=0, __fpclassify_float(x)=0, x=4286578695, y=0] [L39] return y; VAL [\old(x)=4286578695, \old(y)=0, \result=0, x=4286578695, y=0] [L68] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=4286578695, y=0] [L68] float res = fmin_float(x, y); VAL [fmin_float(x, y)=0, res=0, x=4286578695, y=0] [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578695, y=0] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=4286578695, y=0] [L72] reach_error() VAL [res=0, x=4286578695, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 270 SDtfs, 53 SDslu, 492 SDs, 0 SdLazy, 364 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 13591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...