/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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:34,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:34,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:34,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:34,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:34,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:34,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:34,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:34,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:34,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:34,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:34,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:34,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:34,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:34,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:34,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:34,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:34,474 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 01:31:34,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:34,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:34,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:34,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:34,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:34,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:34,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:34,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:34,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:34,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:34,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:34,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:34,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:34,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:34,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:34,509 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:34,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:34,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:34,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:34,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:34,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:34,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:34,510 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:34,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:34,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:35,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:35,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:35,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:35,013 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:35,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2021-02-22 01:31:35,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8e68b6a/aedd3315185045b3815df5b392f538e4/FLAGd8e7feec6 [2021-02-22 01:31:35,763 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:35,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2021-02-22 01:31:35,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8e68b6a/aedd3315185045b3815df5b392f538e4/FLAGd8e7feec6 [2021-02-22 01:31:36,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8e68b6a/aedd3315185045b3815df5b392f538e4 [2021-02-22 01:31:36,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:36,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:36,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:36,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:36,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:36,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63033e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36, skipping insertion in model container [2021-02-22 01:31:36,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:36,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:36,373 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_1250.c[1965,1978] [2021-02-22 01:31:36,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:36,387 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:36,416 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_1250.c[1965,1978] [2021-02-22 01:31:36,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:36,441 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:36,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36 WrapperNode [2021-02-22 01:31:36,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:36,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:36,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:36,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:36,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (1/1) ... [2021-02-22 01:31:36,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:36,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:36,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:36,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:36,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (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 01:31:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-22 01:31:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-22 01:31:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-22 01:31:36,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:31:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-22 01:31:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-22 01:31:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-22 01:31:36,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:36,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:37,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:37,197 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 01:31:37,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:37 BoogieIcfgContainer [2021-02-22 01:31:37,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:37,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:37,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:37,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:37,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:36" (1/3) ... [2021-02-22 01:31:37,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743b3e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:37, skipping insertion in model container [2021-02-22 01:31:37,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:36" (2/3) ... [2021-02-22 01:31:37,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743b3e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:37, skipping insertion in model container [2021-02-22 01:31:37,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:37" (3/3) ... [2021-02-22 01:31:37,210 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-02-22 01:31:37,218 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:37,225 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:37,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:37,273 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:37,274 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:37,274 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:37,274 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:37,274 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:37,274 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:37,275 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:37,275 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-22 01:31:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-22 01:31:37,307 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:37,308 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] [2021-02-22 01:31:37,309 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash 361988670, now seen corresponding path program 1 times [2021-02-22 01:31:37,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:37,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115788654] [2021-02-22 01:31:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:37,417 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:37,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:37,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:37,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:37,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-22 01:31:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:37,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:37,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:37,737 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 01:31:37,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115788654] [2021-02-22 01:31:37,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451591183] [2021-02-22 01:31:37,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:37,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:37,771 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2021-02-22 01:31:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:38,175 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-02-22 01:31:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:38,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-22 01:31:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:38,189 INFO L225 Difference]: With dead ends: 141 [2021-02-22 01:31:38,189 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 01:31:38,195 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 01:31:38,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 01:31:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 01:31:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 01:31:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2021-02-22 01:31:38,299 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 43 [2021-02-22 01:31:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:38,300 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2021-02-22 01:31:38,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2021-02-22 01:31:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-22 01:31:38,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:38,304 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] [2021-02-22 01:31:38,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:38,305 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash -604347002, now seen corresponding path program 1 times [2021-02-22 01:31:38,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:38,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92486648] [2021-02-22 01:31:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:38,310 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:38,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:38,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-22 01:31:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,601 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 01:31:38,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92486648] [2021-02-22 01:31:38,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:38,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:31:38,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816515646] [2021-02-22 01:31:38,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:31:38,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:38,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:31:38,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:31:38,605 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2021-02-22 01:31:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:38,835 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2021-02-22 01:31:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:31:38,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2021-02-22 01:31:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:38,840 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:31:38,840 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 01:31:38,842 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 01:31:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 01:31:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-02-22 01:31:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-22 01:31:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-22 01:31:38,859 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 53 [2021-02-22 01:31:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:38,860 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-22 01:31:38,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:31:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-22 01:31:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 01:31:38,862 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:38,863 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] [2021-02-22 01:31:38,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:38,863 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1708981578, now seen corresponding path program 1 times [2021-02-22 01:31:38,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:38,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432999299] [2021-02-22 01:31:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:38,867 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:38,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:38,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:38,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:31:39,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:39,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:39,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:31:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:39,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:39,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:39,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:39,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:31:39,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-22 01:31:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:39,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:39,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:39,064 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 01:31:39,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432999299] [2021-02-22 01:31:39,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:39,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:31:39,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637591967] [2021-02-22 01:31:39,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:31:39,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:39,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:31:39,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:31:39,067 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 6 states. [2021-02-22 01:31:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:39,317 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2021-02-22 01:31:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:31:39,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2021-02-22 01:31:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:39,320 INFO L225 Difference]: With dead ends: 98 [2021-02-22 01:31:39,320 INFO L226 Difference]: Without dead ends: 82 [2021-02-22 01:31:39,321 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 01:31:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-22 01:31:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-02-22 01:31:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-22 01:31:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-02-22 01:31:39,335 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 56 [2021-02-22 01:31:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:39,336 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-02-22 01:31:39,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:31:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-02-22 01:31:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 01:31:39,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:39,338 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] [2021-02-22 01:31:39,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:31:39,339 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2103928202, now seen corresponding path program 1 times [2021-02-22 01:31:39,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:39,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192093591] [2021-02-22 01:31:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:39,343 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:39,379 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:39,433 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:39,475 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:39,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:39,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:31:39,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:39 BoogieIcfgContainer [2021-02-22 01:31:39,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:39,500 INFO L168 Benchmark]: Toolchain (without parser) took 3359.35 ms. Allocated memory was 168.8 MB in the beginning and 211.8 MB in the end (delta: 43.0 MB). Free memory was 144.6 MB in the beginning and 180.9 MB in the end (delta: -36.3 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:39,500 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 142.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:39,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.31 ms. Allocated memory is still 168.8 MB. Free memory was 143.5 MB in the beginning and 132.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:39,502 INFO L168 Benchmark]: Boogie Preprocessor took 86.60 ms. Allocated memory is still 168.8 MB. Free memory was 132.9 MB in the beginning and 131.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:39,503 INFO L168 Benchmark]: RCFGBuilder took 669.05 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 144.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:39,504 INFO L168 Benchmark]: TraceAbstraction took 2296.03 ms. Allocated memory was 168.8 MB in the beginning and 211.8 MB in the end (delta: 43.0 MB). Free memory was 144.9 MB in the beginning and 180.9 MB in the end (delta: -36.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:39,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 142.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.31 ms. Allocated memory is still 168.8 MB. Free memory was 143.5 MB in the beginning and 132.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.60 ms. Allocated memory is still 168.8 MB. Free memory was 132.9 MB in the beginning and 131.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 669.05 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 144.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2296.03 ms. Allocated memory was 168.8 MB in the beginning and 211.8 MB in the end (delta: 43.0 MB). Free memory was 144.9 MB in the beginning and 180.9 MB in the end (delta: -36.0 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: 74]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 65 SDslu, 414 SDs, 0 SdLazy, 325 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...