/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:26,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:26,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:26,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:26,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:26,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:26,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:26,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:26,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:26,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:26,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:26,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:26,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:26,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:26,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:26,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:26,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:26,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:26,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:26,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:26,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:47:26,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:26,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:26,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:26,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:26,669 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:26,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:26,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:26,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:26,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:26,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:26,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:26,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:26,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:26,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:26,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:26,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:26,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:26,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:26,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:26,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:26,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:26,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:26,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:26,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:26,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:26,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:26,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:26,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:26,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:27,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:27,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:27,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:27,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:27,113 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:27,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2021-02-21 15:47:27,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb158b72f/0f52999e32bf43a0bb5263098caebb58/FLAG72483603f [2021-02-21 15:47:27,886 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:27,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2021-02-21 15:47:27,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb158b72f/0f52999e32bf43a0bb5263098caebb58/FLAG72483603f [2021-02-21 15:47:28,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb158b72f/0f52999e32bf43a0bb5263098caebb58 [2021-02-21 15:47:28,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:28,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:28,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:28,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:28,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:28,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186b7244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28, skipping insertion in model container [2021-02-21 15:47:28,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:28,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:28,442 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_1252a.c[2154,2167] [2021-02-21 15:47:28,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:28,453 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:28,481 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_1252a.c[2154,2167] [2021-02-21 15:47:28,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:28,500 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:28,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28 WrapperNode [2021-02-21 15:47:28,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:28,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:28,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:28,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:28,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (1/1) ... [2021-02-21 15:47:28,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:28,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:28,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:28,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:28,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (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 [2021-02-21 15:47:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-21 15:47:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-21 15:47:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:28,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:28,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:47:28,713 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-21 15:47:28,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-21 15:47:28,715 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:28,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:28,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:29,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:29,293 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 15:47:29,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:29 BoogieIcfgContainer [2021-02-21 15:47:29,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:29,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:29,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:29,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:29,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:28" (1/3) ... [2021-02-21 15:47:29,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453e9bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:29, skipping insertion in model container [2021-02-21 15:47:29,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:28" (2/3) ... [2021-02-21 15:47:29,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453e9bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:29, skipping insertion in model container [2021-02-21 15:47:29,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:29" (3/3) ... [2021-02-21 15:47:29,305 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-02-21 15:47:29,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:29,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:29,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:29,368 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:29,368 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:29,368 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:29,368 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:29,369 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:29,369 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:29,369 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:29,369 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-21 15:47:29,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 15:47:29,394 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:29,395 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] [2021-02-21 15:47:29,395 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:29,401 INFO L82 PathProgramCache]: Analyzing trace with hash 922241453, now seen corresponding path program 1 times [2021-02-21 15:47:29,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:29,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590011360] [2021-02-21 15:47:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:29,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:29,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:29,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590011360] [2021-02-21 15:47:29,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:29,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:29,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483996003] [2021-02-21 15:47:29,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:29,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:29,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:29,923 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2021-02-21 15:47:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:30,188 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2021-02-21 15:47:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:30,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-21 15:47:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:30,203 INFO L225 Difference]: With dead ends: 79 [2021-02-21 15:47:30,203 INFO L226 Difference]: Without dead ends: 40 [2021-02-21 15:47:30,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:30,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-21 15:47:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-21 15:47:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 15:47:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-21 15:47:30,257 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2021-02-21 15:47:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:30,258 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-21 15:47:30,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-21 15:47:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 15:47:30,261 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:30,261 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] [2021-02-21 15:47:30,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:30,262 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1937752283, now seen corresponding path program 1 times [2021-02-21 15:47:30,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:30,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191457910] [2021-02-21 15:47:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:30,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:30,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191457910] [2021-02-21 15:47:30,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:30,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:30,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607355668] [2021-02-21 15:47:30,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:30,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:30,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:30,450 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-21 15:47:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:30,592 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-02-21 15:47:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:30,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-21 15:47:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:30,596 INFO L225 Difference]: With dead ends: 59 [2021-02-21 15:47:30,596 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 15:47:30,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:47:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 15:47:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-21 15:47:30,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:30,611 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2021-02-21 15:47:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:30,612 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:30,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:30,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:30,614 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] [2021-02-21 15:47:30,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:30,614 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash 781242964, now seen corresponding path program 1 times [2021-02-21 15:47:30,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:30,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934039357] [2021-02-21 15:47:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:30,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:30,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934039357] [2021-02-21 15:47:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:30,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263086954] [2021-02-21 15:47:30,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:30,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:30,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:30,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:30,744 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2021-02-21 15:47:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:30,876 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-21 15:47:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:30,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-21 15:47:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:30,879 INFO L225 Difference]: With dead ends: 63 [2021-02-21 15:47:30,879 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 15:47:30,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:47:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 15:47:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-02-21 15:47:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:30,892 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2021-02-21 15:47:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:30,893 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:30,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:30,894 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:30,895 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] [2021-02-21 15:47:30,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:47:30,895 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1015708395, now seen corresponding path program 1 times [2021-02-21 15:47:30,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:30,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380346364] [2021-02-21 15:47:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:30,924 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:30,946 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:30,981 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:30,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:30,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:47:31,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:31 BoogieIcfgContainer [2021-02-21 15:47:31,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:31,021 INFO L168 Benchmark]: Toolchain (without parser) took 2794.21 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 136.1 MB in the beginning and 65.8 MB in the end (delta: 70.2 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:31,021 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:31,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.76 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 124.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:31,023 INFO L168 Benchmark]: Boogie Preprocessor took 45.49 ms. Allocated memory is still 156.2 MB. Free memory was 124.5 MB in the beginning and 122.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:31,024 INFO L168 Benchmark]: RCFGBuilder took 746.70 ms. Allocated memory is still 156.2 MB. Free memory was 122.6 MB in the beginning and 121.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:31,025 INFO L168 Benchmark]: TraceAbstraction took 1721.75 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 120.5 MB in the beginning and 65.8 MB in the end (delta: 54.6 MB). Peak memory consumption was 85.7 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:31,028 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 156.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.76 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 124.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.49 ms. Allocated memory is still 156.2 MB. Free memory was 124.5 MB in the beginning and 122.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 746.70 ms. Allocated memory is still 156.2 MB. Free memory was 122.6 MB in the beginning and 121.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1721.75 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 120.5 MB in the beginning and 65.8 MB in the end (delta: 54.6 MB). Peak memory consumption was 85.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 87]: 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 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; VAL [y=0] [L83] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967301, \old(y)=0] [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301] [L26] __uint32_t msw, lsw; VAL [\old(x)=4294967301, x=4294967301] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967301, lsw=4294967297, msw=4293918721, x=4294967301] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=4294967301, \result=0, lsw=4294967297, msw=4293918721, x=4294967301] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967301, \old(y)=0, __fpclassify_double(x)=0, x=4294967301, y=0] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4294967301, \old(y)=0, \result=0, x=4294967301, y=0] [L83] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4294967301, y=0] [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967301, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0, x=4294967301, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 24 SDslu, 254 SDs, 0 SdLazy, 180 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...