/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:12:47,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:12:47,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:12:47,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:12:47,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:12:47,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:12:47,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:12:47,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:12:47,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:12:47,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:12:47,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:12:47,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:12:47,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:12:47,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:12:47,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:12:47,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:12:47,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:12:47,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:12:47,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:12:47,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:12:47,482 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 [2021-02-23 13:12:47,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:12:47,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:12:47,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:12:47,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:12:47,511 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:12:47,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:12:47,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:12:47,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:12:47,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:12:47,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:12:47,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:12:47,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:12:47,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:12:47,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:12:47,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:12:47,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:12:47,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:12:47,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:12:47,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:12:47,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:12:47,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:12:47,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:12:47,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:12:47,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:12:47,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:12:47,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:12:47,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:12:47,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:12:47,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:12:48,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:12:48,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:12:48,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:12:48,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:12:48,059 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:12:48,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-23 13:12:48,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433a6e02a/3cec863d6413425ea5b0b967bd3aa94b/FLAG593f8b7a5 [2021-02-23 13:12:48,873 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:12:48,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-23 13:12:48,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433a6e02a/3cec863d6413425ea5b0b967bd3aa94b/FLAG593f8b7a5 [2021-02-23 13:12:49,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433a6e02a/3cec863d6413425ea5b0b967bd3aa94b [2021-02-23 13:12:49,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:12:49,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:12:49,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:49,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:12:49,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:12:49,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243683df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49, skipping insertion in model container [2021-02-23 13:12:49,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:12:49,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:12:49,545 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_1131b.c[4119,4132] [2021-02-23 13:12:49,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:49,579 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:12:49,707 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_1131b.c[4119,4132] [2021-02-23 13:12:49,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:12:49,751 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:12:49,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49 WrapperNode [2021-02-23 13:12:49,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:12:49,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:12:49,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:12:49,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:12:49,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (1/1) ... [2021-02-23 13:12:49,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:12:49,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:12:49,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:12:49,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:12:49,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (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 13:12:49,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:12:49,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:12:49,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:12:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-23 13:12:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-23 13:12:49,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:12:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:12:49,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:12:49,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:12:50,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:12:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:12:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 13:12:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:12:50,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:12:50,865 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-23 13:12:50,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:50 BoogieIcfgContainer [2021-02-23 13:12:50,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:12:50,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:12:50,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:12:50,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:12:50,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:12:49" (1/3) ... [2021-02-23 13:12:50,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174052f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:50, skipping insertion in model container [2021-02-23 13:12:50,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:12:49" (2/3) ... [2021-02-23 13:12:50,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174052f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:12:50, skipping insertion in model container [2021-02-23 13:12:50,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:12:50" (3/3) ... [2021-02-23 13:12:50,877 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-23 13:12:50,884 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:12:50,890 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:12:50,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:12:50,945 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:12:50,945 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:12:50,945 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:12:50,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:12:50,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:12:50,946 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:12:50,946 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:12:50,946 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:12:50,967 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-23 13:12:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 13:12:50,975 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:50,976 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] [2021-02-23 13:12:50,976 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2021-02-23 13:12:50,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:50,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058469348] [2021-02-23 13:12:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:51,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:12:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:51,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:12:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:51,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 13:12:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:12:51,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:12:51,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:12:51,386 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 13:12:51,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058469348] [2021-02-23 13:12:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:12:51,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:12:51,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127722001] [2021-02-23 13:12:51,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:12:51,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:12:51,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:12:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:12:51,417 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2021-02-23 13:12:51,546 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-02-23 13:12:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:12:51,937 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2021-02-23 13:12:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:12:51,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-23 13:12:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:12:51,951 INFO L225 Difference]: With dead ends: 138 [2021-02-23 13:12:51,951 INFO L226 Difference]: Without dead ends: 68 [2021-02-23 13:12:51,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:12:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-23 13:12:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-23 13:12:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 13:12:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-02-23 13:12:52,010 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2021-02-23 13:12:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:12:52,011 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-02-23 13:12:52,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:12:52,011 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-02-23 13:12:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:12:52,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:12:52,043 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] [2021-02-23 13:12:52,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:12:52,043 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:12:52,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:12:52,045 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2021-02-23 13:12:52,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:12:52,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363553819] [2021-02-23 13:12:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:12:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:52,156 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:12:52,279 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:12:52,319 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:12:52,319 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:12:52,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:12:52,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:12:52 BoogieIcfgContainer [2021-02-23 13:12:52,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:12:52,364 INFO L168 Benchmark]: Toolchain (without parser) took 3199.55 ms. Allocated memory is still 155.2 MB. Free memory was 130.6 MB in the beginning and 123.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:52,365 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:52,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.39 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 116.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:52,367 INFO L168 Benchmark]: Boogie Preprocessor took 133.19 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 113.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:52,368 INFO L168 Benchmark]: RCFGBuilder took 979.77 ms. Allocated memory is still 155.2 MB. Free memory was 113.8 MB in the beginning and 113.6 MB in the end (delta: 257.9 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:12:52,369 INFO L168 Benchmark]: TraceAbstraction took 1493.22 ms. Allocated memory is still 155.2 MB. Free memory was 113.1 MB in the beginning and 123.3 MB in the end (delta: -10.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:12:52,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 574.39 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 116.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.19 ms. Allocated memory is still 155.2 MB. Free memory was 116.4 MB in the beginning and 113.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 979.77 ms. Allocated memory is still 155.2 MB. Free memory was 113.8 MB in the beginning and 113.6 MB in the end (delta: 257.9 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1493.22 ms. Allocated memory is still 155.2 MB. Free memory was 113.1 MB in the beginning and 123.3 MB in the end (delta: -10.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372032558759952, \old(Zero_fmod)=9223372032558759951, \old(Zero_fmod)=9223372032558759944, one_fmod=1, Zero_fmod={5:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) VAL [\old(x)=9223372032558759940, one_fmod=1, Zero_fmod={5:0}] [L163] __int32_t hx; VAL [\old(x)=9223372032558759940, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372032558759940, \result=-3, hx=-2, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L182] RET isfinite_double(x) VAL [isfinite_double(x)=-3, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, Zero_fmod={5:0}] [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, hx=2146435072, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759942, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L188] reach_error() VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...