/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:27,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:27,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:27,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:27,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:27,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:27,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:27,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:27,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:27,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:27,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:27,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:27,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:27,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:27,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:27,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:27,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:27,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:27,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:27,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:27,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:47:27,698 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:27,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:27,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:27,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:27,703 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:27,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:27,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:27,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:27,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:27,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:27,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:27,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:27,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:27,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:27,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:27,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:27,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:27,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:27,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:27,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:27,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:27,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:27,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:27,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:27,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:27,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:27,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:27,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:27,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:28,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:28,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:28,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:28,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:28,194 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:28,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2021-02-21 15:47:28,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf2ed25/1ce6f59a5ccf4ceabd100f3a8730af08/FLAGa418f205a [2021-02-21 15:47:28,936 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:28,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2021-02-21 15:47:28,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf2ed25/1ce6f59a5ccf4ceabd100f3a8730af08/FLAGa418f205a [2021-02-21 15:47:29,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf2ed25/1ce6f59a5ccf4ceabd100f3a8730af08 [2021-02-21 15:47:29,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:29,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:29,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:29,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:29,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:29,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d0fd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29, skipping insertion in model container [2021-02-21 15:47:29,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:29,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:29,504 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_1252b.c[2154,2167] [2021-02-21 15:47:29,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:29,518 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:29,547 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_1252b.c[2154,2167] [2021-02-21 15:47:29,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:29,570 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:29,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29 WrapperNode [2021-02-21 15:47:29,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:29,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:29,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:29,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:29,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... [2021-02-21 15:47:29,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:29,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:29,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:29,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:29,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:29,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-02-21 15:47:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2021-02-21 15:47:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:29,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:29,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:47:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-02-21 15:47:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:29,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:29,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:29,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:30,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:30,098 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 15:47:30,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:30 BoogieIcfgContainer [2021-02-21 15:47:30,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:30,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:30,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:30,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:30,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:29" (1/3) ... [2021-02-21 15:47:30,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdf96ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:30, skipping insertion in model container [2021-02-21 15:47:30,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:29" (2/3) ... [2021-02-21 15:47:30,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdf96ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:30, skipping insertion in model container [2021-02-21 15:47:30,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:30" (3/3) ... [2021-02-21 15:47:30,112 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2021-02-21 15:47:30,121 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:30,126 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:30,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:30,183 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:30,184 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:30,184 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:30,184 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:30,184 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:30,184 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:30,185 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:30,185 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-21 15:47:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 15:47:30,241 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:30,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:30,245 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash 922241453, now seen corresponding path program 1 times [2021-02-21 15:47:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:30,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302318014] [2021-02-21 15:47:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:30,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:30,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:30,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302318014] [2021-02-21 15:47:30,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:30,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:30,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785821879] [2021-02-21 15:47:30,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:30,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:30,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:30,834 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2021-02-21 15:47:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:31,115 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2021-02-21 15:47:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:31,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-21 15:47:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:31,127 INFO L225 Difference]: With dead ends: 79 [2021-02-21 15:47:31,128 INFO L226 Difference]: Without dead ends: 40 [2021-02-21 15:47:31,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-21 15:47:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-21 15:47:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-21 15:47:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-02-21 15:47:31,185 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2021-02-21 15:47:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:31,185 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-02-21 15:47:31,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-02-21 15:47:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 15:47:31,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:31,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:31,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:31,189 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:31,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:31,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1937752283, now seen corresponding path program 1 times [2021-02-21 15:47:31,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:31,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007069374] [2021-02-21 15:47:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:31,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:31,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007069374] [2021-02-21 15:47:31,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:31,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:31,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571490527] [2021-02-21 15:47:31,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:31,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:31,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:31,432 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2021-02-21 15:47:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:31,610 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-02-21 15:47:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:31,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-21 15:47:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:31,614 INFO L225 Difference]: With dead ends: 59 [2021-02-21 15:47:31,614 INFO L226 Difference]: Without dead ends: 44 [2021-02-21 15:47:31,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:47:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-21 15:47:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-21 15:47:31,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:31,629 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2021-02-21 15:47:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:31,630 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:31,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:31,631 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:31,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:31,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:31,632 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:31,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash 781242964, now seen corresponding path program 1 times [2021-02-21 15:47:31,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:31,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974331586] [2021-02-21 15:47:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:31,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-21 15:47:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:31,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:31,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:31,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:47:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:31,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974331586] [2021-02-21 15:47:31,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:31,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 15:47:31,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044121350] [2021-02-21 15:47:31,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 15:47:31,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:31,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 15:47:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 15:47:31,771 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2021-02-21 15:47:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:31,927 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-21 15:47:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 15:47:31,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-21 15:47:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:31,929 INFO L225 Difference]: With dead ends: 63 [2021-02-21 15:47:31,929 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 15:47:31,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:47:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 15:47:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-02-21 15:47:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 15:47:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-02-21 15:47:31,941 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2021-02-21 15:47:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:31,941 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-02-21 15:47:31,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 15:47:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-02-21 15:47:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:31,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:31,943 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] [2021-02-21 15:47:31,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 15:47:31,943 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1015708395, now seen corresponding path program 1 times [2021-02-21 15:47:31,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:31,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781822922] [2021-02-21 15:47:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:31,983 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:32,007 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:32,037 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:32,038 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:32,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 15:47:32,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:32 BoogieIcfgContainer [2021-02-21 15:47:32,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:32,086 INFO L168 Benchmark]: Toolchain (without parser) took 2820.56 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 129.8 MB in the beginning and 95.9 MB in the end (delta: 34.0 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:32,086 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 175.1 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:32,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.47 ms. Allocated memory is still 175.1 MB. Free memory was 128.7 MB in the beginning and 148.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:32,088 INFO L168 Benchmark]: Boogie Preprocessor took 44.08 ms. Allocated memory is still 175.1 MB. Free memory was 148.7 MB in the beginning and 147.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:32,089 INFO L168 Benchmark]: RCFGBuilder took 482.04 ms. Allocated memory is still 175.1 MB. Free memory was 147.0 MB in the beginning and 139.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:32,090 INFO L168 Benchmark]: TraceAbstraction took 1981.53 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 139.3 MB in the beginning and 95.9 MB in the end (delta: 43.5 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:32,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 175.1 MB. Free memory is still 146.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.47 ms. Allocated memory is still 175.1 MB. Free memory was 128.7 MB in the beginning and 148.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.08 ms. Allocated memory is still 175.1 MB. Free memory was 148.7 MB in the beginning and 147.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 482.04 ms. Allocated memory is still 175.1 MB. Free memory was 147.0 MB in the beginning and 139.6 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1981.53 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 139.3 MB in the beginning and 95.9 MB in the end (delta: 43.5 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; VAL [x=0] [L83] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4294967302] [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L26] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=4293918721, x=0] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967302, __fpclassify_double(x)=0, x=0, y=4294967302] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=0, \old(y)=4294967302, \result=4294967302, x=0, y=4294967302] [L83] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967302, x=0, y=4294967302] [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967302, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967302] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=4294967302, x=0, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 24 SDslu, 254 SDs, 0 SdLazy, 180 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...