/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:30,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:30,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:30,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:30,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:30,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:30,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:30,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:30,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:30,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:30,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:30,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:30,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:30,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:30,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:30,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:30,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:30,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:30,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:30,546 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:30,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:30,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:30,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:30,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:30,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:30,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:30,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:30,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:30,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:30,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:30,564 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:30,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:30,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:30,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:30,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:30,565 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:30,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:30,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:30,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:30,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:30,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:30,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:30,567 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:30,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:30,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:31,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:31,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:31,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:31,012 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:31,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-22 01:31:31,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1bac27c/51bd06ec37cc45eab901b00317467261/FLAGf0e5ee752 [2021-02-22 01:31:31,778 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:31,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2021-02-22 01:31:31,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1bac27c/51bd06ec37cc45eab901b00317467261/FLAGf0e5ee752 [2021-02-22 01:31:32,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1bac27c/51bd06ec37cc45eab901b00317467261 [2021-02-22 01:31:32,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:32,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:32,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:32,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:32,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:32,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcd6208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32, skipping insertion in model container [2021-02-22 01:31:32,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:32,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:32,344 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c[1765,1778] [2021-02-22 01:31:32,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:32,358 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:32,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c[1765,1778] [2021-02-22 01:31:32,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:32,410 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:32,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32 WrapperNode [2021-02-22 01:31:32,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:32,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:32,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:32,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:32,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (1/1) ... [2021-02-22 01:31:32,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:32,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:32,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:32,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:32,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (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 [2021-02-22 01:31:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-22 01:31:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-22 01:31:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2021-02-22 01:31:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:31:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-22 01:31:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-22 01:31:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2021-02-22 01:31:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:32,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:32,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:33,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:33,167 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 01:31:33,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:33 BoogieIcfgContainer [2021-02-22 01:31:33,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:33,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:33,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:33,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:32" (1/3) ... [2021-02-22 01:31:33,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681d7005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:33, skipping insertion in model container [2021-02-22 01:31:33,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:32" (2/3) ... [2021-02-22 01:31:33,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681d7005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:33, skipping insertion in model container [2021-02-22 01:31:33,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:33" (3/3) ... [2021-02-22 01:31:33,180 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2021-02-22 01:31:33,188 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:33,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:33,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:33,245 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:33,245 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:33,245 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:33,246 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:33,246 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:33,246 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:33,246 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:33,246 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-22 01:31:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 01:31:33,279 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:33,280 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] [2021-02-22 01:31:33,281 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1066152697, now seen corresponding path program 1 times [2021-02-22 01:31:33,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:33,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384124155] [2021-02-22 01:31:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:33,388 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:33,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:33,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:31:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:33,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-22 01:31:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:33,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:33,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:33,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:33,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384124155] [2021-02-22 01:31:33,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:33,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:33,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500793676] [2021-02-22 01:31:33,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:33,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:33,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:33,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:33,740 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2021-02-22 01:31:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:34,038 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2021-02-22 01:31:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:34,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-22 01:31:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:34,050 INFO L225 Difference]: With dead ends: 138 [2021-02-22 01:31:34,051 INFO L226 Difference]: Without dead ends: 75 [2021-02-22 01:31:34,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:31:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-22 01:31:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-02-22 01:31:34,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-22 01:31:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-02-22 01:31:34,119 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 45 [2021-02-22 01:31:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:34,119 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-02-22 01:31:34,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-02-22 01:31:34,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-22 01:31:34,123 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:34,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:34,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:34,124 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:34,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1670016673, now seen corresponding path program 1 times [2021-02-22 01:31:34,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:34,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836186558] [2021-02-22 01:31:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:34,131 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:31:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-22 01:31:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:34,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:34,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836186558] [2021-02-22 01:31:34,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:34,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:31:34,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304873168] [2021-02-22 01:31:34,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:31:34,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:31:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:31:34,444 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 6 states. [2021-02-22 01:31:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:34,784 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2021-02-22 01:31:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:31:34,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2021-02-22 01:31:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:34,789 INFO L225 Difference]: With dead ends: 89 [2021-02-22 01:31:34,789 INFO L226 Difference]: Without dead ends: 80 [2021-02-22 01:31:34,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:31:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-22 01:31:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-02-22 01:31:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-22 01:31:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-22 01:31:34,814 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 55 [2021-02-22 01:31:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:34,814 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-22 01:31:34,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:31:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-22 01:31:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 01:31:34,817 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:34,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:34,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:34,818 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1013353920, now seen corresponding path program 1 times [2021-02-22 01:31:34,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:34,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798063336] [2021-02-22 01:31:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:34,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-22 01:31:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:34,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:34,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-02-22 01:31:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:35,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:35,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:35,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:35,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:31:35,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:35,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:35,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:35,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:35,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:35,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:35,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798063336] [2021-02-22 01:31:35,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:35,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:31:35,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014230840] [2021-02-22 01:31:35,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:31:35,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:35,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:31:35,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:31:35,081 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 6 states. [2021-02-22 01:31:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:35,359 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2021-02-22 01:31:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:31:35,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-22 01:31:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:35,367 INFO L225 Difference]: With dead ends: 93 [2021-02-22 01:31:35,367 INFO L226 Difference]: Without dead ends: 84 [2021-02-22 01:31:35,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:31:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-02-22 01:31:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2021-02-22 01:31:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-22 01:31:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2021-02-22 01:31:35,397 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 58 [2021-02-22 01:31:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:35,399 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2021-02-22 01:31:35,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:31:35,400 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2021-02-22 01:31:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 01:31:35,410 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:35,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:35,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:31:35,410 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash -584569344, now seen corresponding path program 1 times [2021-02-22 01:31:35,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:35,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852641860] [2021-02-22 01:31:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:35,416 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:35,468 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:35,512 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:35,553 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:35,554 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:35,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:31:35,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:35 BoogieIcfgContainer [2021-02-22 01:31:35,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:35,578 INFO L168 Benchmark]: Toolchain (without parser) took 3459.50 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.5 MB in the beginning and 156.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:35,578 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:35,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.69 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 124.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:35,580 INFO L168 Benchmark]: Boogie Preprocessor took 46.80 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:35,581 INFO L168 Benchmark]: RCFGBuilder took 709.62 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 131.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:35,582 INFO L168 Benchmark]: TraceAbstraction took 2404.87 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 130.4 MB in the beginning and 156.5 MB in the end (delta: -26.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:35,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.69 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 124.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.80 ms. Allocated memory is still 160.4 MB. Free memory was 124.9 MB in the beginning and 123.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.62 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 131.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2404.87 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 130.4 MB in the beginning and 156.5 MB in the end (delta: -26.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L64] CALL, EXPR isnan_double(x) [L18] return x != x; [L64] RET, EXPR isnan_double(x) [L64] COND TRUE !isnan_double(x) [L66] CALL, EXPR fmin_double(x, y) [L47] CALL, EXPR __fpclassify_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] RET, EXPR __fpclassify_double(x) [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] RET, EXPR fmin_double(x, y) [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L70] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 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: 246 SDtfs, 97 SDslu, 393 SDs, 0 SdLazy, 337 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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...