/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:15,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:15,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:16,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:16,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:16,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:16,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:16,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:16,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:16,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:16,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:16,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:16,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:16,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:16,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:16,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:16,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:16,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:16,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:16,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:16,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:16,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:16,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:16,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:16,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:16,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:16,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:16,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:16,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:16,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:16,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:16,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:16,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:16,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:16,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:16,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:16,146 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:16,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:16,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:16,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:16,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:16,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:16,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:16,148 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:16,148 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:16,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:16,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:16,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:16,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:16,621 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:16,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2021-02-22 01:31:16,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4c7db50/54ea197d14de4db084484116371d0f02/FLAGe25aa4ff2 [2021-02-22 01:31:17,402 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:17,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2021-02-22 01:31:17,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4c7db50/54ea197d14de4db084484116371d0f02/FLAGe25aa4ff2 [2021-02-22 01:31:17,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4c7db50/54ea197d14de4db084484116371d0f02 [2021-02-22 01:31:17,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:17,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:17,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:17,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:17,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:17,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:17" (1/1) ... [2021-02-22 01:31:17,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7622a7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:17, skipping insertion in model container [2021-02-22 01:31:17,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:17" (1/1) ... [2021-02-22 01:31:17,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:17,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:18,028 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_1072a.c[2254,2267] [2021-02-22 01:31:18,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:18,042 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:18,089 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_1072a.c[2254,2267] [2021-02-22 01:31:18,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:18,118 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18 WrapperNode [2021-02-22 01:31:18,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:18,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:18,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:18,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:18,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... [2021-02-22 01:31:18,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:18,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:18,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:18,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:18,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-22 01:31:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-22 01:31:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-22 01:31:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-22 01:31:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-22 01:31:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:18,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:18,842 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-22 01:31:18,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:18 BoogieIcfgContainer [2021-02-22 01:31:18,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:18,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:18,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:18,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:18,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:17" (1/3) ... [2021-02-22 01:31:18,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07a133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:18, skipping insertion in model container [2021-02-22 01:31:18,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:18" (2/3) ... [2021-02-22 01:31:18,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07a133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:18, skipping insertion in model container [2021-02-22 01:31:18,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:18" (3/3) ... [2021-02-22 01:31:18,854 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2021-02-22 01:31:18,862 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:18,868 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:18,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:18,910 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:18,911 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:18,911 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:18,911 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:18,911 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:18,911 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:18,912 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:18,912 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2021-02-22 01:31:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 01:31:18,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:18,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:31:18,943 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:18,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:18,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1863542698, now seen corresponding path program 1 times [2021-02-22 01:31:18,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:18,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122711877] [2021-02-22 01:31:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:19,048 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:19,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:19,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:31:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:19,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-22 01:31:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:19,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:19,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:19,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122711877] [2021-02-22 01:31:19,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:19,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:19,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164649160] [2021-02-22 01:31:19,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:19,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:19,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:19,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:19,469 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2021-02-22 01:31:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:19,948 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2021-02-22 01:31:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:19,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-22 01:31:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:19,962 INFO L225 Difference]: With dead ends: 184 [2021-02-22 01:31:19,962 INFO L226 Difference]: Without dead ends: 95 [2021-02-22 01:31:19,967 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 [2021-02-22 01:31:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-22 01:31:20,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-02-22 01:31:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-22 01:31:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2021-02-22 01:31:20,028 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 45 [2021-02-22 01:31:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:20,029 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2021-02-22 01:31:20,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2021-02-22 01:31:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-22 01:31:20,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:20,033 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] [2021-02-22 01:31:20,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:20,034 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:20,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:20,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1388494837, now seen corresponding path program 1 times [2021-02-22 01:31:20,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:20,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208592210] [2021-02-22 01:31:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:20,045 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:20,257 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:20,373 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:20,414 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:20,414 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:20,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:20,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:20 BoogieIcfgContainer [2021-02-22 01:31:20,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:20,439 INFO L168 Benchmark]: Toolchain (without parser) took 2712.95 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 129.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:20,439 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:20,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.69 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:20,441 INFO L168 Benchmark]: Boogie Preprocessor took 48.76 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 120.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:20,442 INFO L168 Benchmark]: RCFGBuilder took 674.21 ms. Allocated memory is still 158.3 MB. Free memory was 120.3 MB in the beginning and 126.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:20,443 INFO L168 Benchmark]: TraceAbstraction took 1590.22 ms. Allocated memory is still 158.3 MB. Free memory was 125.6 MB in the beginning and 129.6 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:20,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 376.69 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.76 ms. Allocated memory is still 158.3 MB. Free memory was 122.3 MB in the beginning and 120.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.21 ms. Allocated memory is still 158.3 MB. Free memory was 120.3 MB in the beginning and 126.1 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1590.22 ms. Allocated memory is still 158.3 MB. Free memory was 125.6 MB in the beginning and 129.6 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: 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 76, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR trunc_double(x) [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] RET, EXPR trunc_double(x) [L87] double res = trunc_double(x); [L90] CALL, EXPR isinf_double(res) [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] RET, EXPR isinf_double(res) [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 19 SDslu, 62 SDs, 0 SdLazy, 122 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred 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: 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...