/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:24,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:24,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:24,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:37:24,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:37:24,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:37:24,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:37:24,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:37:24,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:37:24,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:37:24,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:37:24,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:37:24,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:24,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:24,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:24,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:24,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:24,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:24,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:24,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:24,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:24,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:24,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:24,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:24,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:24,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:24,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:24,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:24,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:24,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:24,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:24,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:24,593 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:24,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:24,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:24,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:24,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:24,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:24,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:24,595 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:24,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:24,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:24,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:24,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:24,596 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:24,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:24,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:24,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:24,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:24,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:24,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:24,598 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:24,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:25,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:25,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:25,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:25,017 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:25,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2021-02-23 17:37:25,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8307a47/a0c8a2bd45f84345b77d9b19c790a035/FLAGb47b3f304 [2021-02-23 17:37:25,699 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:25,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2021-02-23 17:37:25,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8307a47/a0c8a2bd45f84345b77d9b19c790a035/FLAGb47b3f304 [2021-02-23 17:37:26,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8307a47/a0c8a2bd45f84345b77d9b19c790a035 [2021-02-23 17:37:26,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:26,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:26,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:26,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:26,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:26,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8ff2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26, skipping insertion in model container [2021-02-23 17:37:26,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:26,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:26,422 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_1210.c[3091,3104] [2021-02-23 17:37:26,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:26,446 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:26,517 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_1210.c[3091,3104] [2021-02-23 17:37:26,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:26,540 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:26,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26 WrapperNode [2021-02-23 17:37:26,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:26,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:26,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:26,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:26,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... [2021-02-23 17:37:26,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:26,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:26,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:26,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:26,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2021-02-23 17:37:26,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:26,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2021-02-23 17:37:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:26,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:26,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:27,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:27,560 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-02-23 17:37:27,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:27 BoogieIcfgContainer [2021-02-23 17:37:27,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:27,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:27,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:27,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:27,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:26" (1/3) ... [2021-02-23 17:37:27,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7f86ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:27, skipping insertion in model container [2021-02-23 17:37:27,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:26" (2/3) ... [2021-02-23 17:37:27,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7f86ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:27, skipping insertion in model container [2021-02-23 17:37:27,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:27" (3/3) ... [2021-02-23 17:37:27,585 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2021-02-23 17:37:27,602 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:27,613 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:27,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:27,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:27,705 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:27,705 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:27,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:27,706 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:27,706 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:27,706 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:27,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2021-02-23 17:37:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 17:37:27,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:27,746 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] [2021-02-23 17:37:27,746 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1126700956, now seen corresponding path program 1 times [2021-02-23 17:37:27,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:27,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739656660] [2021-02-23 17:37:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:27,845 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:27,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:28,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:28,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-02-23 17:37:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:28,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:28,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739656660] [2021-02-23 17:37:28,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:28,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:28,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334555124] [2021-02-23 17:37:28,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:28,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:28,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:28,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:28,156 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 4 states. [2021-02-23 17:37:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:28,683 INFO L93 Difference]: Finished difference Result 319 states and 373 transitions. [2021-02-23 17:37:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:28,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2021-02-23 17:37:28,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:28,696 INFO L225 Difference]: With dead ends: 319 [2021-02-23 17:37:28,696 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 17:37:28,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 17:37:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-02-23 17:37:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-23 17:37:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 164 transitions. [2021-02-23 17:37:28,770 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 164 transitions. Word has length 47 [2021-02-23 17:37:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:28,771 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 164 transitions. [2021-02-23 17:37:28,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 164 transitions. [2021-02-23 17:37:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 17:37:28,776 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:28,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:28,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:28,777 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1835433645, now seen corresponding path program 1 times [2021-02-23 17:37:28,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:28,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872894805] [2021-02-23 17:37:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:28,782 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:28,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 17:37:28,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:28,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:28,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:28,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:37:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:29,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:29,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-23 17:37:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:29,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:29,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:29,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872894805] [2021-02-23 17:37:29,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:29,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 17:37:29,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587007794] [2021-02-23 17:37:29,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 17:37:29,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:29,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 17:37:29,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:29,029 INFO L87 Difference]: Start difference. First operand 158 states and 164 transitions. Second operand 5 states. [2021-02-23 17:37:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:29,451 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2021-02-23 17:37:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 17:37:29,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2021-02-23 17:37:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:29,455 INFO L225 Difference]: With dead ends: 165 [2021-02-23 17:37:29,455 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 17:37:29,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:37:29,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 17:37:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-02-23 17:37:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-23 17:37:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2021-02-23 17:37:29,478 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 65 [2021-02-23 17:37:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:29,479 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2021-02-23 17:37:29,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 17:37:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2021-02-23 17:37:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 17:37:29,483 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:29,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:29,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:29,484 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:29,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1132037767, now seen corresponding path program 1 times [2021-02-23 17:37:29,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:29,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577163559] [2021-02-23 17:37:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:29,489 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:29,558 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:29,647 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:29,715 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:29,716 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:29,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:37:29,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:29 BoogieIcfgContainer [2021-02-23 17:37:29,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:29,741 INFO L168 Benchmark]: Toolchain (without parser) took 3689.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 128.4 MB in the beginning and 140.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:29,742 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 154.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:29,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.26 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 115.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:29,744 INFO L168 Benchmark]: Boogie Preprocessor took 106.95 ms. Allocated memory is still 154.1 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:29,745 INFO L168 Benchmark]: RCFGBuilder took 907.96 ms. Allocated memory is still 154.1 MB. Free memory was 113.5 MB in the beginning and 133.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:29,746 INFO L168 Benchmark]: TraceAbstraction took 2170.51 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 133.0 MB in the beginning and 140.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:29,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 154.1 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 472.26 ms. Allocated memory is still 154.1 MB. Free memory was 127.3 MB in the beginning and 115.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.95 ms. Allocated memory is still 154.1 MB. Free memory was 115.7 MB in the beginning and 113.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 907.96 ms. Allocated memory is still 154.1 MB. Free memory was 113.5 MB in the beginning and 133.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2170.51 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 133.0 MB in the beginning and 140.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 124]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; [L118] double x = 0.0 / 0.0; [L119] double iptr; [L120] CALL, EXPR modf_double(x, &iptr) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L31] COND TRUE j0 < 20 [L32] COND TRUE j0 < 0 [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; [L120] RET, EXPR modf_double(x, &iptr) [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L123] CALL, EXPR isnan_double(iptr) [L17] return x != x; [L123] RET, EXPR isnan_double(iptr) [L123] isnan_double(iptr) && !isnan_double(res) [L123] CALL, EXPR isnan_double(res) [L17] return x != x; [L123] RET, EXPR isnan_double(res) [L123] isnan_double(iptr) && !isnan_double(res) [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 333 SDtfs, 42 SDslu, 324 SDs, 0 SdLazy, 461 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...