/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:25,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:25,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:25,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:25,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:25,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:25,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:25,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:25,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:25,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:25,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:25,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:25,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:25,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:25,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:25,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:25,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:25,768 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 22:34:25,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:25,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:25,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:25,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:25,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:25,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:25,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:25,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:25,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:25,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:25,783 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:25,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:25,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:25,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:25,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:25,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:25,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:25,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:26,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:26,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:26,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:26,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:26,155 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:26,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2021-02-23 22:34:26,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb9e79e7/d3ce30afad784f119138d60e9b024df9/FLAGe285ea7a0 [2021-02-23 22:34:26,792 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:26,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2021-02-23 22:34:26,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb9e79e7/d3ce30afad784f119138d60e9b024df9/FLAGe285ea7a0 [2021-02-23 22:34:27,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecb9e79e7/d3ce30afad784f119138d60e9b024df9 [2021-02-23 22:34:27,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:27,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:27,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:27,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:27,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:27,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590df59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27, skipping insertion in model container [2021-02-23 22:34:27,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:27,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:27,368 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_1072d.c[2254,2267] [2021-02-23 22:34:27,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:27,384 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:27,450 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_1072d.c[2254,2267] [2021-02-23 22:34:27,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:27,474 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:27,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27 WrapperNode [2021-02-23 22:34:27,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:27,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:27,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:27,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:27,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (1/1) ... [2021-02-23 22:34:27,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:27,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:27,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:27,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:27,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (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 22:34:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-23 22:34:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-23 22:34:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:27,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-23 22:34:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-23 22:34:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:28,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:28,174 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-23 22:34:28,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:28 BoogieIcfgContainer [2021-02-23 22:34:28,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:28,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:28,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:28,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:28,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:27" (1/3) ... [2021-02-23 22:34:28,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93d485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:28, skipping insertion in model container [2021-02-23 22:34:28,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:27" (2/3) ... [2021-02-23 22:34:28,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93d485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:28, skipping insertion in model container [2021-02-23 22:34:28,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:28" (3/3) ... [2021-02-23 22:34:28,185 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2021-02-23 22:34:28,192 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:28,197 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:28,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:28,234 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:28,235 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:28,235 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:28,235 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:28,235 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:28,235 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:28,235 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:28,236 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2021-02-23 22:34:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 22:34:28,264 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:28,265 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] [2021-02-23 22:34:28,265 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:28,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1863542698, now seen corresponding path program 1 times [2021-02-23 22:34:28,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:28,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027127539] [2021-02-23 22:34:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:28,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:28,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:34:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:28,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 22:34:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:28,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:28,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:28,571 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 22:34:28,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027127539] [2021-02-23 22:34:28,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:28,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:28,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887894101] [2021-02-23 22:34:28,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:28,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:28,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:28,598 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2021-02-23 22:34:29,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:29,048 INFO L93 Difference]: Finished difference Result 184 states and 213 transitions. [2021-02-23 22:34:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:29,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-23 22:34:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:29,060 INFO L225 Difference]: With dead ends: 184 [2021-02-23 22:34:29,060 INFO L226 Difference]: Without dead ends: 95 [2021-02-23 22:34:29,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 22:34:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-23 22:34:29,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-02-23 22:34:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-23 22:34:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2021-02-23 22:34:29,119 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 45 [2021-02-23 22:34:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:29,120 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2021-02-23 22:34:29,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2021-02-23 22:34:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 22:34:29,123 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:29,124 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 22:34:29,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:29,124 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1388494837, now seen corresponding path program 1 times [2021-02-23 22:34:29,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:29,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661312487] [2021-02-23 22:34:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:29,249 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:29,411 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:29,477 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:29,478 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:29,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:29,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:29 BoogieIcfgContainer [2021-02-23 22:34:29,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:29,578 INFO L168 Benchmark]: Toolchain (without parser) took 2432.98 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 127.4 MB in the beginning and 153.8 MB in the end (delta: -26.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:29,579 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:29,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 115.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:29,583 INFO L168 Benchmark]: Boogie Preprocessor took 48.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:29,584 INFO L168 Benchmark]: RCFGBuilder took 651.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 122.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:29,587 INFO L168 Benchmark]: TraceAbstraction took 1395.78 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 121.9 MB in the beginning and 153.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:29,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 115.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 651.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 122.5 MB in the end (delta: -8.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1395.78 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 121.9 MB in the beginning and 153.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 23.2 MB. 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) VAL [\old(x)=4294967301] [L20] int signbit; VAL [\old(x)=4294967301, x=4294967301] [L21] int msw; VAL [\old(x)=4294967301, x=4294967301] [L22] unsigned int lsw; VAL [\old(x)=4294967301, x=4294967301] [L23] int exponent_less_1023; VAL [\old(x)=4294967301, x=4294967301] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=4294967301, ew_u={9:0}, x=4294967301] [L26] ew_u.value = (x) VAL [\old(x)=4294967301, ew_u={9:0}, x=4294967301] [L27] EXPR ew_u.parts.msw VAL [\old(x)=4294967301, ew_u={9:0}, ew_u.parts.msw=0, x=4294967301] [L27] (msw) = ew_u.parts.msw VAL [\old(x)=4294967301, ew_u={9:0}, ew_u.parts.msw=0, msw=0, x=4294967301] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=4294967301, ew_u={9:0}, ew_u.parts.lsw=4294967300, msw=0, x=4294967301] [L28] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967301, ew_u={9:0}, ew_u.parts.lsw=4294967300, lsw=4, msw=0, x=4294967301] [L30] signbit = msw & 0x80000000 VAL [\old(x)=4294967301, lsw=4, msw=0, signbit=-2, x=4294967301] [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=4, msw=0, signbit=-2, x=4294967301] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=4, msw=0, signbit=-2, x=4294967301] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=4, msw=0, signbit=-2, x=4294967301] [L50] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=4, msw=0, signbit=-2, x=4294967301] [L51] return x + x; VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=4, msw=0, signbit=-2, x=4294967301] [L87] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967299, x=4294967301] [L87] double res = trunc_double(x); VAL [res=4294967299, trunc_double(x)=4294967299, x=4294967301] [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=4294967299] [L66] __int32_t hx, lx; VAL [\old(x)=4294967299, x=4294967299] [L68] ieee_double_shape_type ew_u; VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L69] ew_u.value = (x) VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L70] EXPR ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=4294967293, x=4294967299] [L70] (hx) = ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=4294967293, hx=-3, x=4294967299] [L71] EXPR ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=0, hx=-3, x=4294967299] [L71] (lx) = ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=0, hx=-3, lx=0, x=4294967299] [L73] hx &= 0x7fffffff VAL [\old(x)=4294967299, lx=0, x=4294967299] [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=4294967299, hx=-1, lx=0, x=4294967299] [L75] hx = 0x7ff00000 - hx VAL [\old(x)=4294967299, hx=2146435073, lx=0, x=4294967299] [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=4294967299, \result=0, hx=2146435073, lx=0, x=4294967299] [L90] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=4294967299, x=4294967301] [L90] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=4294967299, x=4294967301] [L91] reach_error() VAL [res=4294967299, x=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.0s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 4312 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...